Translation of the Function

Oct 13, 2025 by wbrum.org 67 views

Understanding the Original Function

The original function given is $f(x) = x^2 + 22x + 58$ . This is a quadratic function in the form of $f(x) = ax^2 + bx + c$ , where $a = 1$ , $b = 22$ , and $c = 58$ . The vertex form of a quadratic function is given by $f(x) = a(x - h)^2 + k$ , where $(h, k)$ is the vertex of the parabola.

Translation of the Function

The function is translated 4 units to the right and 16 units up. This means that the new function will have the same shape as the original function, but its vertex will be shifted 4 units to the right and 16 units up.

Finding the New Vertex

To find the new vertex, we need to shift the original vertex 4 units to the right and 16 units up. The original vertex can be found by using the formula $h = -\frac{b}{2a}$ , where $a = 1$ and $b = 22$ . Plugging in these values, we get $h = -\frac{22}{2(1)} = -11$ . The original vertex is at $(-11, f(-11))$ . To find $f(-11)$ , we plug $x = -11$ into the original function: $f(-11) = (-11)^2 + 22(-11) + 58 = 121 - 242 + 58 = -63$ . So, the original vertex is at $(-11, -63)$ .

Shifting the Vertex

Now, we need to shift the original vertex 4 units to the right and 16 units up. This means that the new vertex will be at $(-11 + 4, -63 + 16) = (-7, -47)$ .

Finding the New Function

Now that we have the new vertex, we can find the new function in vertex form. The new function is given by $f(x) = a(x - h)^2 + k$ , where $a = 1$ , $h = -7$ , and $k = -47$ . Plugging in these values, we get $f(x) = (x + 7)^2 - 47$ .

Conclusion

The function $f(x) = x^2 + 22x + 58$ is translated 4 units to the right and 16 units up. The vertex form of the new function is $f(x) = (x + 7)^2 - 47$ .

Answer

The correct answer is C. $(x+7)^2 - 47$ .

Discussion

This problem requires a good understanding of quadratic functions and their properties. The translation of the function is a common concept in mathematics, and it is essential to understand how to find the new vertex and the new function after translation. The vertex form of a quadratic function is a useful tool for finding the vertex and the equation of the parabola.

Example

Let's consider another example to illustrate the concept of function translation. Suppose we have the function $f(x) = x^2 - 6x + 8$ and we want to translate it 3 units to the left and 2 units down. We can find the new vertex by shifting the original vertex 3 units to the left and 2 units down. The original vertex is at $(3, f(3))$ , where $f(3) = (3)^2 - 6(3) + 8 = 9 - 18 + 8 = -1$ . The new vertex will be at $(3 - 3, -1 - 2) = (0, -3)$ . The new function will be $f(x) = (x - 0)^2 - 3 = x^2 - 3$ .

Tips and Tricks

When translating a function, it is essential to understand the concept of shifting the vertex.
The vertex form of a quadratic function is a useful tool for finding the vertex and the equation of the parabola.
When finding the new function after translation, make sure to use the correct values for $a$ , $h$ , and $k$ .

Conclusion

In conclusion, the function $f(x) = x^2 + 22x + 58$ is translated 4 units to the right and 16 units up. The vertex form of the new function is $f(x) = (x + 7)^2 - 47$ . This problem requires a good understanding of quadratic functions and their properties, and it is essential to understand how to find the new vertex and the new function after translation.

Q: What is the vertex form of a quadratic function?

A: The vertex form of a quadratic function is given by $f(x) = a(x - h)^2 + k$ , where $(h, k)$ is the vertex of the parabola.

Q: How do I find the vertex of a quadratic function?

A: To find the vertex of a quadratic function, you can use the formula $h = -\frac{b}{2a}$ , where $a$ and $b$ are the coefficients of the quadratic function.

Q: What is the effect of translating a function on its vertex?

A: When a function is translated, its vertex is shifted in the same direction as the translation. For example, if a function is translated 4 units to the right, its vertex will also be shifted 4 units to the right.

Q: How do I find the new function after translating a function?

A: To find the new function after translating a function, you need to use the correct values for $a$ , $h$ , and $k$ . The new function will be in the form $f(x) = a(x - h)^2 + k$ , where $a$ is the same as the original function, $h$ is the new x-coordinate of the vertex, and $k$ is the new y-coordinate of the vertex.

Q: What is the difference between a horizontal translation and a vertical translation?

A: A horizontal translation is a translation in the x-direction, which means that the vertex of the function is shifted to the left or right. A vertical translation is a translation in the y-direction, which means that the vertex of the function is shifted up or down.

Q: How do I determine whether a function is translated horizontally or vertically?

A: To determine whether a function is translated horizontally or vertically, you need to look at the equation of the function. If the equation has a term of the form $(x - h)$ , it means that the function is translated horizontally. If the equation has a term of the form $(x + h)$ , it means that the function is translated vertically.

Q: Can a function be translated both horizontally and vertically?

A: Yes, a function can be translated both horizontally and vertically. This means that the vertex of the function will be shifted in both the x-direction and the y-direction.

Q: How do I find the new function after translating a function both horizontally and vertically?

A: To find the new function after translating a function both horizontally and vertically, you need to use the correct values for $a$ , $h$ , and $k$ . The new function will be in the form $f(x) = a(x - h)^2 + k$ , where $a$ is the same as the original function, $h$ is the new x-coordinate of the vertex, and $k$ is the new y-coordinate of the vertex.

Q: What is the significance of the vertex form of a quadratic function?

A: The vertex form of a quadratic function is a useful tool for finding the vertex and the equation of the parabola. It is also a useful tool for graphing quadratic functions and understanding their properties.

Q: Can the vertex form of a quadratic function be used to find the x-intercepts of the parabola?

A: Yes, the vertex form of a quadratic function can be used to find the x-intercepts of the parabola. To find the x-intercepts, you need to set the function equal to zero and solve for x.

Q: How do I find the x-intercepts of a quadratic function in vertex form?

A: To find the x-intercepts of a quadratic function in vertex form, you need to set the function equal to zero and solve for x. This can be done by using the quadratic formula or by factoring the quadratic expression.

Q: What is the relationship between the vertex form and the standard form of a quadratic function?

A: The vertex form and the standard form of a quadratic function are related by the equation $f(x) = a(x - h)^2 + k = ax^2 + bx + c$ . The vertex form is a more convenient form for finding the vertex and the equation of the parabola, while the standard form is a more convenient form for graphing the parabola.

Q: Can the vertex form of a quadratic function be used to find the equation of the parabola?

A: Yes, the vertex form of a quadratic function can be used to find the equation of the parabola. To find the equation, you need to expand the vertex form and simplify the expression.

Q: How do I find the equation of a quadratic function in vertex form?

A: To find the equation of a quadratic function in vertex form, you need to expand the vertex form and simplify the expression. This can be done by using the distributive property and combining like terms.

Q: What is the significance of the equation of a quadratic function?

A: The equation of a quadratic function is a useful tool for understanding the properties of the parabola, such as its vertex, x-intercepts, and y-intercept. It is also a useful tool for graphing the parabola and understanding its behavior.

Q: Can the equation of a quadratic function be used to find the x-intercepts of the parabola?

A: Yes, the equation of a quadratic function can be used to find the x-intercepts of the parabola. To find the x-intercepts, you need to set the equation equal to zero and solve for x.

Q: How do I find the x-intercepts of a quadratic function using its equation?

A: To find the x-intercepts of a quadratic function using its equation, you need to set the equation equal to zero and solve for x. This can be done by using the quadratic formula or by factoring the quadratic expression.

Q: What is the relationship between the equation of a quadratic function and its graph?

A: The equation of a quadratic function and its graph are related by the fact that the equation represents the function, and the graph represents the function's behavior. The equation can be used to find the x-intercepts, y-intercept, and vertex of the parabola, while the graph can be used to visualize the parabola's behavior.

Q: Can the equation of a quadratic function be used to find the y-intercept of the parabola?

A: Yes, the equation of a quadratic function can be used to find the y-intercept of the parabola. To find the y-intercept, you need to set x equal to zero and solve for y.

Q: How do I find the y-intercept of a quadratic function using its equation?

A: To find the y-intercept of a quadratic function using its equation, you need to set x equal to zero and solve for y. This can be done by substituting x = 0 into the equation and simplifying the expression.

Q: What is the significance of the y-intercept of a quadratic function?

A: The y-intercept of a quadratic function is a useful tool for understanding the behavior of the parabola. It represents the point where the parabola intersects the y-axis, and it can be used to find the equation of the parabola.

Q: Can the y-intercept of a quadratic function be used to find the equation of the parabola?

A: Yes, the y-intercept of a quadratic function can be used to find the equation of the parabola. To find the equation, you need to use the y-intercept and the equation of the parabola to find the values of the coefficients.

Q: How do I find the equation of a quadratic function using its y-intercept?

A: To find the equation of a quadratic function using its y-intercept, you need to use the y-intercept and the equation of the parabola to find the values of the coefficients. This can be done by substituting the y-intercept into the equation and solving for the coefficients.

Q: What is the relationship between the y-intercept of a quadratic function and its graph?

A: The y-intercept of a quadratic function and its graph are related by the fact that the y-intercept represents the point where the parabola intersects the y-axis, and the graph represents the parabola's behavior.

Q: Can the y-intercept of a quadratic function be used to find the x-intercepts of the parabola?

A: Yes, the y-intercept of a quadratic function can be used to find the x-intercepts of the parabola. To find the x-intercepts, you need to use the y-intercept and the equation of the parabola to find the values of the coefficients.

Q: How do I find the x-intercepts of a quadratic function using its y-intercept?

A: To find the x-intercepts of a quadratic function using its y-intercept, you need to use the y-intercept and the equation of the parabola to find the values of the coefficients. This can be done by substituting the y-intercept into the equation and solving for the coefficients.

Q: What is the significance of the x-intercepts of a quadratic function?

A: The x-intercepts of a quadratic function are a useful tool for understanding the behavior of the parabola. They represent the points where the parabola intersects the x-axis, and they can be used to find the equation of the parabola.