SSAT Upper Level Math : How to find the endpoints of a line segment

Study concepts, example questions & explanations for SSAT Upper Level Math

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Example Questions

Example Question #2072 :Hspt Mathematics

A line segment on the coordinate plane has midpoint. One of its endpoints is. What is the-coordinate of the other endpoint, in terms ofand/or?

Possible Answers:

Correct answer:

Explanation:

Letbe the-coordinate of the other endpoint. Since the-coordinate of the midpoint of the segment is the mean of those of the endpoints, we can set up an equation as follows:

Example Question #1 :Midpoint Formula

A line segment on the coordinate plane has one endpoint at; its midpoint is. Which of the following gives the-coordinate of its other endpoint in terms ofand?

Possible Answers:

Correct answer:

Explanation:

To find the value of the-coordinate of the other endpoint, we will assign the variable. Then, since the-coordinate of the midpoint of the segment is the mean of those of its endpoints, the equation that we can set up is

.

We solve for:

Example Question #1 :How To Find The Endpoints Of A Line Segment

One endpoint of a line segment on the coordinate plane is the point; the midpoint of the segment is the point. Give the-coordinate of the other endpoint of the segment.

Possible Answers:

Correct answer:

Explanation:

In thepart of the midpoint formula

,

set, and solve:

This is the correct-coordinate.

Example Question #1 :How To Find The Endpoints Of A Line Segment

One endpoint of a line segment on the coordinate plane is the point; the midpoint of the segment is the point. Give the-coordinate of the other endpoint of the segment.

Possible Answers:

Correct answer:

Explanation:

Using thepart of the midpoint formula

.

setand solve:

The second endpoint is.

Example Question #3 :How To Find The Endpoints Of A Line Segment

On the coordinate plane,is the midpoint ofandis the midpoint of.has coordinatesandhas coordinates.

Give the-coordinate of.

Possible Answers:

Correct answer:

Explanation:

First, find the-coordinate of. In thepart of the midpoint formula

,

set, and solve:

Now, find the-coordinate ofsimilarly, setting

This is the correct response.

Example Question #1 :How To Find The Endpoints Of A Line Segment

On the coordinate plane,is the midpoint ofandis the midpoint of.has coordinatesandhas coordinates.

Give the-coordinate of.

Possible Answers:

Correct answer:

Explanation:

First, find the-coordinate of. In thepart of the midpoint formula

,

set, and solve:

Now, find the-coordinate ofsimilarly, setting

This is the correct response.

Example Question #5 :How To Find The Endpoints Of A Line Segment

On the coordinate plane,is the midpoint ofandis the midpoint of.has coordinatesandhas coordinates.

Give the-coordinate of.

Possible Answers:

Correct answer:

Explanation:

First, find the-coordinate of. In thepart of the midpoint formula

,

set, and solve:

Now, find the-coordinate ofsimilarly, setting

This is the correct response.

Example Question #11 :Midpoint Formula

On the coordinate plane,is the midpoint ofandis the midpoint of.has coordinatesandhas coordinates.

Give the-coordinate of.

Possible Answers:

Correct answer:

Explanation:

First, find the-coordinate of. In thepart of the midpoint formula using the coordinates fromand

,

set, and solve:

Now, find the-coordinate ofsimilarly, setting

This is the correct response.

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