Question

M is the midpoint of RS. R has coordinates (-12, 4), and M has coordinates(1, -2). What are the coordinates of S

A(-5.5,-1) C(13, 6)
B(-11,2) D(14,-8)

Answer 1

(1, -2) = (-12 + x) /2 , ( 4 + y) / 2

where x and why are coordinates of S

Answer 2

can you continue from here?

Answer 3

(-12 + x ) / 2 = 1 - solve this will give x coordinate

Answer 4

I think the answer is c

Answer 5

-12 + x = 2
x = 14

so the cordinates are (14,y)

find value of y and you've got it

Answer 6

I got -8

Answer 7

right - answer is d

Answer 8

good