GED Math : Midpoint Formula

Study concepts, example questions & explanations for GED Math

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Example Questions

Example Question #821 : Geometry And Graphs

Find the midpoint given the following points:

 and 

Possible Answers:

Correct answer:

Explanation:

To find the midpoint between two points, we will use the following formula:

where  and  are the given points.

So, given the points  and , we can substitute. We get

Example Question #822 : Geometry And Graphs

The midpoint of a line with endpoints at  and  is . Find the value of .

Possible Answers:

Correct answer:

Explanation:

Recall how to find the midpoint of a line:

Since we are only worried about the -coordinate, we can write the following equation:

Solve for .

Example Question #823 : Geometry And Graphs

Find the point halfway between the two following points:

Possible Answers:

Correct answer:

Explanation:

Find the point halfway between the two following points:

We need to use the midpoint formula. To do so, we are basically averaging out our x and y values separately.

So, plug in our values to solve:

So, our answer is (15,49)

 

Example Question #824 : Geometry And Graphs

If  is the midpoint of a line that has endpoints at  and , find the value of .

Possible Answers:

Correct answer:

Explanation:

Recall how to find the midpoint of a line when given two points:

Since the y-coordinate of the midpoint is , we can write the following equation:

Solve for .

Example Question #11 : Midpoint Formula

Find the point midway between the following two points.

 

Possible Answers:

Correct answer:

Explanation:

Find the point midway between the following two points.

 

To find the midpoint, we need to essentially average our x and y values separately.

So, our answer is

 

Example Question #12 : Midpoint Formula

The midpoint of a line segment on the coordinate plane is located at ; one endpoint is located at the origin. Where is the other endpoint?

Possible Answers:

Correct answer:

Explanation:

The midpoint of a line segment with its endpoints at  and  is at the point , where 

 and .

The midpoint and one endpoint are given, so first, find the -coordinate of the second endpoint by setting  and , and solving for :

Isolate  by multiplying both sides by 2:

Find the -coordinate of the second endpoint similarly, setting  and :

The second endpoint of the segment is at .

Example Question #11 : Midpoint Formula

A line on a coordinate graph has endpoints at  and . What is the midpoint of the line?

Possible Answers:

Correct answer:

Explanation:

Recall how to find the midpoint of a line when given two endpoints:

Plug in the given points to find the midpoint.

The midpoint of the line is located at .

Example Question #111 : Coordinate Geometry

The midpoint of a line that passes through the points  and  is . Find the coordinates of the point .

Possible Answers:

Correct answer:

Explanation:

Recall how to find the midpoint of a line:

Start by finding the x-coordinate.

Next, find the y-coordinate.

The coordinates for the second endpoint is 

Example Question #111 : Coordinate Geometry

If the midpoint of a line with one endpoint at  is , what are the coordinates for the other endpoint?

Possible Answers:

Correct answer:

Explanation:

Recall how to find the midpoint of a line segment:

Start by finding the x-coordinate of the other endpoint.

Next, find the y-coordinate of the other endpoint.

The other endpoint must be .

Example Question #833 : Geometry And Graphs

The two endpoints of a line segment are  and . Find the midpoint of the line segment. 

Possible Answers:

Correct answer:

Explanation:

To find the midpoint of a line, you basically have to average the two  values and average the two  values. In other words, you have to add the two  values and then divide by , and add the two  values and then divide by . The standard equation for the midpoint formula is .

The two  values are  and , and , so the  coordinate of your midpoint is . The two  values are  and , and , so the  coordinate of your midpoint is 

Therefore, the midpoint is .

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