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December 21, 2014

December 21, 2014

Posted by **Bob** on Sunday, January 23, 2011 at 3:22pm.

The point (a,b) is such that (14,-18) is the midpoint of the segment from (15,-8) to (a,b). Then a and =?

- Math -
**Damon**, Sunday, January 23, 2011 at 3:44pmaverage x = 14 = (15 + a)/2

28 = 15 + a

a = 13

average y = -18 = (-8 +b)/2

-36 = -8 + b

b = -28

so

(13,-28)

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