Multiply both sides of the equation by 2 to eliminate the fraction

Oct 13, 2025 by wbrum.org 88 views

$Multiply both sides of the equation by 2 to eliminate the fraction$

Introduction

In mathematics, the standard form of a line is a way to express the equation of a line in a specific format. It is a powerful tool used to describe the relationship between the variables x and y. In this article, we will explore the standard form of a line, focusing on the specific case where the slope is $$-\frac{3}{2}$$ and the y-intercept is 6.

What is the Standard Form of a Line?

The standard form of a line is given by the equation:

Ax + By = C

where A, B, and C are constants, and x and y are the variables. The standard form is useful because it allows us to easily identify the slope and y-intercept of the line.

Finding the Standard Form of a Line with a Given Slope and Y-Intercept

To find the standard form of a line with a given slope and y-intercept, we can use the following steps:

Write the equation of the line in slope-intercept form: The slope-intercept form of a line is given by the equation:

y = mx + b

where m is the slope and b is the y-intercept.

Substitute the given slope and y-intercept into the equation: We are given that the slope is $$-\frac{3}{2}$$ and the y-intercept is 6. Substituting these values into the equation, we get:

y = -\frac{3}{2}x + 6

Multiply both sides of the equation by 2 to eliminate the fraction: To eliminate the fraction, we can multiply both sides of the equation by 2:

2y = -3x + 12

Rearrange the equation to put it in standard form: To put the equation in standard form, we need to move the x term to the left-hand side of the equation. We can do this by adding 3x to both sides of the equation:

3x + 2y = 12

Conclusion

In this article, we have explored the standard form of a line, focusing on the specific case where the slope is $$-\frac{3}{2}$$ and the y-intercept is 6. We have shown that the standard form of a line can be found by using the slope-intercept form of a line and then multiplying both sides of the equation by 2 to eliminate the fraction. The standard form of a line is a powerful tool used to describe the relationship between the variables x and y.

Example Problems

Problem 1

Find the standard form of a line with a slope of $$\frac{4}{3}$$ and a y-intercept of 2.

Solution

Write the equation of the line in slope-intercept form:

y = \frac{4}{3}x + 2

Multiply both sides of the equation by 3 to eliminate the fraction:

3y = 4x + 6

Rearrange the equation to put it in standard form:

4x - 3y = -6

Problem 2

Find the standard form of a line with a slope of $$-\frac{2}{5}$$ and a y-intercept of 3.

Solution

Write the equation of the line in slope-intercept form:

y = -\frac{2}{5}x + 3

Multiply both sides of the equation by 5 to eliminate the fraction:

5y = -2x + 15

Rearrange the equation to put it in standard form:

2x + 5y = 15

Common Mistakes to Avoid

When finding the standard form of a line, there are several common mistakes to avoid:

Not eliminating the fraction: Make sure to multiply both sides of the equation by the denominator to eliminate the fraction.
Not rearranging the equation: Make sure to move the x term to the left-hand side of the equation to put it in standard form.
Not checking the equation: Make sure to check the equation to ensure that it is in standard form.

Conclusion

Q: What is the standard form of a line?

A: The standard form of a line is a way to express the equation of a line in the format Ax + By = C, where A, B, and C are constants, and x and y are the variables.

Q: How do I find the standard form of a line with a given slope and y-intercept?

A: To find the standard form of a line with a given slope and y-intercept, you can use the following steps:

Write the equation of the line in slope-intercept form (y = mx + b).
Substitute the given slope and y-intercept into the equation.
Multiply both sides of the equation by the denominator to eliminate the fraction.
Rearrange the equation to put it in standard form (Ax + By = C).

Q: What is the difference between the slope-intercept form and the standard form of a line?

A: The slope-intercept form of a line (y = mx + b) is a way to express the equation of a line in terms of the slope (m) and the y-intercept (b). The standard form of a line (Ax + By = C) is a way to express the equation of a line in a more general format, where A, B, and C are constants.

Q: How do I know if an equation is in standard form?

A: To determine if an equation is in standard form, look for the following characteristics:

The equation is in the format Ax + By = C.
The coefficients of x and y are integers or fractions.
The constant term is an integer or a fraction.

Q: Can I use the standard form of a line to find the slope and y-intercept of a line?

A: Yes, you can use the standard form of a line to find the slope and y-intercept of a line. To do this, you can rearrange the equation to put it in slope-intercept form (y = mx + b).

Q: What are some common mistakes to avoid when finding the standard form of a line?

A: Some common mistakes to avoid when finding the standard form of a line include:

Not eliminating the fraction.
Not rearranging the equation.
Not checking the equation to ensure that it is in standard form.

Q: Can I use the standard form of a line to solve systems of linear equations?

A: Yes, you can use the standard form of a line to solve systems of linear equations. To do this, you can use the method of substitution or elimination to find the solution to the system.

Q: Are there any other applications of the standard form of a line?

A: Yes, the standard form of a line has many other applications in mathematics and science, including:

Graphing lines and planes.
Finding the equation of a line passing through two points.
Solving systems of linear equations.
Finding the distance between a point and a line.

Conclusion

In conclusion, the standard form of a line is a powerful tool used to describe the relationship between the variables x and y. By following the steps outlined in this article, you can find the standard form of a line with a given slope and y-intercept. Remember to eliminate the fraction, rearrange the equation, and check the equation to ensure that it is in standard form.