Question

if a line segment has endpoint A(3x+5,3y) and B(x-1,-y), what are the coordinates of the mid point of line AB

Answer 1

Midpoint formula - $\left(\dfrac{x_1+x_2}{2},\dfrac{y_1+y_2}{2}\right)$
$\left(\dfrac{3x+5+x-1}{2},\dfrac{3y-y}{2}\right)=\\ \left(\dfrac{4x+4}{2},\dfrac{2y}{2}\right)=\\ (2x+2,y)$