Endpoint: (-10,8), midpoint: (1,-1)

Question

Answer options are A) (12,10)

B) (-½,1)

C) (-5½,4½)

D) (-1,0)

Answer 1

the other end point is the same distance as from the midpoint to the given end point

slope of the line through the two given points is (8+1)/(-10-1) = -9/11

as x goes up 9, y decreases by 11

the other endpoint is either (12,-10) or (-21,17) which matches none of the answers. but it matches A if you got a sign wrong.

Maybe the question was what is another point on the line connecting the two given points?

the line is y+1=(-9/11)(x-1) plug in the other points and see if any work A, B and D don't work

C works. That's possibly the answer to the unclear question.