Question

Given the following endpoints (A & B) and midpoint (M) on a number line, find the coordinates for A & B.
M(-11)
A(2x + 3)
B(5x + 3)

1) A(-13) & B(-9)
2) A(-5) & B(-17)
3) A(-17) & B(-5)
4) A(-9) & B(-13)

Answer 1

it exists (A+B)/2=M
so (2x+3+5x+3)/2=-11
3.5x+3=-11, 3.5x=-14, x=-4
so A=-5 B=-17

Answer 2

Thanks AndrewNJ