GED Math : GED Math

Study concepts, example questions & explanations for GED Math

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Example Questions

Example Question #21 : Slope

What is the slope of the graph?

 

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Possible Answers:

0

Correct answer:

Explanation:

Slope is  .

We can pick any two points on the graph and count the rise and run. This graph goes through (0,0), so lets pick that point. It also looks like (2,3) is on the graph.

So, from (0,0) to (2,3), you go up 3, and over 2.

This makes our slope 

Example Question #22 : Slope

Find the slope of the line connecting the points  and .

Possible Answers:

Correct answer:

Explanation:

Find the slope of the line connecting the points  and .

To find our slope, we need to recall "Rise over Run." This can also be thought of as change in y over change in x.

Now, all we need to do is plug in our points and solve. It doesn't matter which pairs are x and which are y, but we must keep it consistent.

Now let's simplify:

So, we get  which cannot be reduced, so we are all set!

Example Question #22 : Slope

What is the slope of the line perpendicular to the line running between the points  and ?

Possible Answers:

Correct answer:

Explanation:

Recall that slope is calculated as:

This could be represented, using your two points, as:

Based on your data, this would be:

 

Remember, the question asks for the slope that is perpendicular to this slope! Don't forget this point! The perpendicular slope is opposite and reciprocal.

Therefore, it is:

Example Question #1 : X Intercept And Y Intercept

Which of the following equations has as its graph a line with -intercept 9?

Possible Answers:

Correct answer:

Explanation:

The equation in which  when  is graphed by a line that includes point  - that is, its -intercept is 9. Therefore, substitute 0 for  in each equation and solve for 

 

 

 

 

 

The correct choice is , since  is a solution of this equation.

Example Question #2 : X Intercept And Y Intercept

Which of the following equations has as its graph a line with -intercept ?

Possible Answers:

Correct answer:

Explanation:

The equation in which  when  is graphed by a line that includes point  - that is, its -intercept is . Therefore, substitute 0 for  in each equation and solve for 

 

 

 

 

 

The correct choice is , since  is a solution of this equation.

Example Question #1 : X Intercept And Y Intercept

Find the  and -intercepts of the following equation: 

Possible Answers:

Correct answer:

Explanation:

To find the , we need to set  equal to 0 in our equation:

Now solve for :

 

To find the , we need to set  equal to 0 in our equation:

Now solve for :

Example Question #2 : X Intercept And Y Intercept

Find the  and -intercepts for the following equation: 

Possible Answers:

Correct answer:

Explanation:

To find the , set the  equal to 0:

Then solve for :

 

To find the , set the  equal to 0:

Then solve for :

Example Question #1713 : Ged Math

Find the  and -intercepts for the following equation: 

Possible Answers:

Correct answer:

Explanation:

To find the , set  equal to 0:

Then solve:

Remember, the square root of  is both  and 

 

To find the, set  equal to 0:

Then solve:

Example Question #1 : X Intercept And Y Intercept

Given the following equation, what is the x-intercept?  

Possible Answers:

Correct answer:

Explanation:

The x-intercept is the value of  when .

Substitute the value into the equation and solve for .

Subtract 6 on both sides.

Divide by 3 on both sides.

The answer is:  

Example Question #1 : X Intercept And Y Intercept

What is the y-intercept of the following equation?  

Possible Answers:

Correct answer:

Explanation:

The y-intercept is the value of  when .

Substitute zero for x.

Subtract 1 on both sides.

Divide by 4 on both sides.

The answer is:  

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