Rewriting the Inequality to Match the Options

Oct 13, 2025 by wbrum.org 33 views

Understanding the Inequality

The given inequality is y - 3x < -x + 4. To isolate y, we need to get y on one side of the inequality by itself. This can be achieved by performing algebraic operations on both sides of the inequality.

Isolating y

To isolate y, we start by adding 3x to both sides of the inequality:

y - 3x + 3x < -x + 4 + 3x

This simplifies to:

y < 4 + x

Next, we can rewrite the inequality to make it easier to read:

y < 4 + x

Rewriting the Inequality to Match the Options

Now, let's rewrite the inequality to match the options given:

y < 4 + x

We can rewrite this as:

y < 4x + 4

This matches option A.

Graphing the Inequality

To graph the inequality, we need to find the boundary line. The boundary line is the line that the inequality is not equal to. In this case, the boundary line is:

y = 4x + 4

To graph the inequality, we can use the following steps:

Graph the boundary line y = 4x + 4.
Choose a test point that is not on the boundary line. For example, let's choose the point (0, 0).
Plug the test point into the inequality to see if it is true or false. If the test point is (0, 0), then the inequality becomes:

0 < 4(0) + 4

This simplifies to:

0 < 4

Since 0 is not less than 4, the test point (0, 0) is not in the solution set.

Since the test point (0, 0) is not in the solution set, we know that the region below the boundary line is the solution set.

Graphing the Solution Set

The graph of the solution set is a region below the boundary line y = 4x + 4. This region is shaded in the graph below.

Graph

Conclusion

In conclusion, the correct answer is option A: y < 4x + 4. This is the inequality rewritten to isolate y, and its graph is a region below the boundary line y = 4x + 4.

Final Answer

The final answer is option A: y < 4x + 4.

Q: What is the first step in isolating y in the inequality y - 3x < -x + 4?

A: The first step in isolating y is to add 3x to both sides of the inequality. This will get rid of the negative 3x term on the left side of the inequality.

Q: How do I rewrite the inequality to make it easier to read?

A: To rewrite the inequality, we can simplify the right side of the inequality by combining like terms. In this case, we can rewrite the inequality as y < 4 + x.

Q: How do I graph the inequality?

A: To graph the inequality, we need to find the boundary line. The boundary line is the line that the inequality is not equal to. In this case, the boundary line is y = 4x + 4. We can graph the boundary line and then choose a test point that is not on the boundary line. If the test point is not in the solution set, we know that the region below the boundary line is the solution set.

Q: What is the solution set of the inequality?

A: The solution set of the inequality is the region below the boundary line y = 4x + 4. This region is shaded in the graph.

Q: How do I determine if a point is in the solution set?

A: To determine if a point is in the solution set, we can plug the point into the inequality. If the inequality is true, then the point is in the solution set. If the inequality is false, then the point is not in the solution set.

Q: What is the final answer to the problem?

A: The final answer to the problem is option A: y < 4x + 4. This is the inequality rewritten to isolate y, and its graph is a region below the boundary line y = 4x + 4.

Q: Can you provide an example of a test point that is not in the solution set?

A: Yes, an example of a test point that is not in the solution set is (0, 0). If we plug this point into the inequality, we get:

0 < 4(0) + 4

This simplifies to:

0 < 4

Since 0 is not less than 4, the test point (0, 0) is not in the solution set.

Q: Can you provide an example of a test point that is in the solution set?

A: Yes, an example of a test point that is in the solution set is (1, 2). If we plug this point into the inequality, we get:

2 < 4(1) + 4

This simplifies to:

2 < 8

Since 2 is less than 8, the test point (1, 2) is in the solution set.

Q: How do I know if the inequality is true or false?

A: To determine if the inequality is true or false, we can compare the values on both sides of the inequality. If the value on the left side is less than the value on the right side, then the inequality is true. If the value on the left side is not less than the value on the right side, then the inequality is false.

Q: Can you provide a summary of the steps to isolate y in the inequality y - 3x < -x + 4?

A: Yes, the steps to isolate y in the inequality y - 3x < -x + 4 are:

Add 3x to both sides of the inequality to get rid of the negative 3x term on the left side.
Simplify the right side of the inequality by combining like terms.
Graph the boundary line y = 4x + 4.
Choose a test point that is not on the boundary line.
Plug the test point into the inequality to see if it is true or false.
If the test point is not in the solution set, then the region below the boundary line is the solution set.

Q: Can you provide a summary of the steps to graph the inequality?

A: Yes, the steps to graph the inequality are:

Graph the boundary line y = 4x + 4.
Choose a test point that is not on the boundary line.
Plug the test point into the inequality to see if it is true or false.
If the test point is not in the solution set, then the region below the boundary line is the solution set.

Q: Can you provide a summary of the steps to determine if a point is in the solution set?

A: Yes, the steps to determine if a point is in the solution set are:

Plug the point into the inequality.
If the inequality is true, then the point is in the solution set.
If the inequality is false, then the point is not in the solution set.