Question

The coordinates of point a are 50 units of x and 70 units of y. The coordinates of point b are 46 units of x and 76 units of y. With x on the horizontal axis and y on the vertical axis, the slope of the line between points a and b is

Answer 1

The slope is given by

... m = ∆y/∆x = (76 -70)/(46 -50) = 6/-4 = -3/2