Posted by **Andy** on Tuesday, April 23, 2013 at 10:52pm.

M(-4,-2) is the midpoint of RS. If S has coordinates (-2,5), find the coordinates of R.

- Midpoint Help / Math -
**rbowh**, Wednesday, April 24, 2013 at 12:12am
Midpoint formula:

M = [ (x1 + x2)/2 , (y1 + y2)/2]

(-4,2) = [ (-2 + x)/2 , (5, + y)/2 ]

-4 = (-2 + x)/2 and 2 = (5 + y)/2

-8 = -2 + x. and 4 = 5 + y

-6 = x. and -1 = y

Coordinates of R (-6, -1)

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