Question

If A(x, y) and B(2x, 2y) are points on a grid, the coordinates of the midpoint of line

segment AB are?

Answer 1

Explanation:

to find the midpoint of a line segment given 2 endpoints, (x1, y1) and (x2, y2) :

add each x-coordinate and divide by 2 to find x of the midpoint. add each y-coordinate and divide by 2 to find y of the midpoint.

so, let's call the midpoint of AB M :

M = ((x + 2x)/2, (y + 2y)/2) = (3x/2, 3y/2)