All SSAT Upper Level Math Resources
Example Questions
Example Question #1 : How To Find The Endpoints Of A Line Segment
A line segment on the coordinate plane has midpoint . One of its endpoints is . What is the -coordinate of the other endpoint, in terms of and/or ?
Let be 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 #2 : How To Find The Endpoints Of A Line Segment
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 of and ?
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 #3 : 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.
In the part of the midpoint formula
,
set , and solve:
This is the correct -coordinate.
Example Question #4 : 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.
Using the part of the midpoint formula
.
set and solve:
The second endpoint is .
Example Question #4 : How To Find The Endpoints Of A Line Segment
On the coordinate plane, is the midpoint of and is the midpoint of . has coordinates and has coordinates .
Give the -coordinate of .
First, find the -coordinate of . In the part of the midpoint formula
,
set , and solve:
Now, find the -coordinate of similarly, setting
This is the correct response.
Example Question #6 : How To Find The Endpoints Of A Line Segment
On the coordinate plane, is the midpoint of and is the midpoint of . has coordinates and has coordinates .
Give the -coordinate of .
First, find the -coordinate of . In the part of the midpoint formula
,
set , and solve:
Now, find the -coordinate of similarly, setting
This is the correct response.
Example Question #2 : How To Find The Endpoints Of A Line Segment
On the coordinate plane, is the midpoint of and is the midpoint of . has coordinates and has coordinates .
Give the -coordinate of .
First, find the -coordinate of . In the part of the midpoint formula
,
set , and solve:
Now, find the -coordinate of similarly, setting
This is the correct response.
Example Question #3 : How To Find The Endpoints Of A Line Segment
On the coordinate plane, is the midpoint of and is the midpoint of . has coordinates and has coordinates .
Give the -coordinate of .
First, find the -coordinate of . In the part of the midpoint formula using the coordinates from and
,
set , and solve:
Now, find the -coordinate of similarly, setting
This is the correct response.
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