SOLUTION: M(8, 7) is the midpoint of RS. The coordinates of S are (9, 5). What are the coordinates of R?

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Question 859169: M(8, 7) is the midpoint of RS. The coordinates of S are (9, 5). What are the coordinates of R?
Answer by ewatrrr(24785)   (Show Source): You can put this solution on YOUR website!
 
Hi,
Let x and y represent the coordinates of R
Midpoint Pt(x,y): ( , )
S are (9, 5). Midpoint (8,7)
(x+9)/2 = 8
x = 7
(y + 5)/2 = 7
y = 9
(7, 9) coordinates of R
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