Question

Find the coordinate of point A of the line segment AB if the segment has an endpoint B(-2,10) and a midpoint at (3,-2).
Am I supposed to use distance formula or slope to solve?

Answer 1

slope

Answer 2

y=mx+b

Answer 3

use 2 equations..

Answer 4

10 = m(-2)+b
-2=m(3)+b

Answer 5

so your plugging in for both x and y 's

Answer 6

then set the b's equal to each other, and your home free

Answer 7

10+2m = -3m - 2

Answer 8

5m = -12
m = -12/5

Answer 9

thrn plug in that slope into either equation to solve for b

Answer 10

10 = (-12/5)(-2) + b

Answer 11

So ultimately what would the coordinate of point A be?