Question

A straight line goes through the points (p,q) and (r,s), where p + 2 = r, q + 4 = s. Find the gradient of the line.

Answer 1

Gradient = $$\frac{y_2-y_1}{x_2-x_1}$$

                 = $$\frac{q+4-q}{p+2-p}$$

                 = $$\frac{4}{2}=2$$