Page 84 - Math Course 1 (Book 2)

Midpoints of a Segment

1 Find Coordinates of Endpoint
Now substitute for an x in the expression for PR.
2
Find the coordinates of R if N (8, –3) is the midpoint
PR = 14x + 2 Original measure of RS and S has coordinates (–1, 5).
1 1
PR = 14 ( ) + 2 x =
2 2 A. (3.5, 1)
B. (–10, 13)
PR = 7 + 2 or 9 Simplify.
C. (15, –1)
D. (17, –11)
Answer The measure of PR is 9 units. Answer

Your Turn!

Find Coordinates of Midpoint

Find Coordinates of Endpoint
The coordinate on a number line of Y and O are 7

and –15 respectively. Find the coordinate of the
What is the measure of AC if B is the midpoint of
midpoint of YO.
AC?

A. –4
A. 1
B. –8
B. 3
C. 4
C. 5
D. 22
D. 10

Answer
Answer

Find the coordinates of the midpoint of XY for
X(–2, 3) and Y (–8, –9)

A. (–10, –6)
B. (–5, –3)
C. (6, 12)
D. (–6, –12)

Answer

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