Question

Y is the midpoint of AB, The coordinates are A(-3,-7) and B(-1,1) What is the coordinate Y?

Answer 1

The formla of a midpoint of AB:

`M\left((x_A+x_B)/(2),\ (y_A+y_B)/(2)\right)`

We have A(-3, -7) and B(-1, 1). Substitute:

`x_M=(-3+(-1))/(2)=(-4)/(2)=-2\\\\y_M=(-7+1)/(2)=(-6)/(2)=-3`

Answer: M(-2, -3)