The length of a rectangle is shown below

on a coordinate grid from negative 6 to positive 6 on the x-axis and on the y-axis, two points a and b are shown. the point a is on ordered pair negative 2, 3, and the point b is on ordered pair 3, 3.

if the area of the rectangle to be drawn is 30 square units, where should points c and d be located, if they lie vertically below a and b, to make this rectangle?