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 = $\frac{y_{2} - y_{1}}{x_{2} - x_{1}}$

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

= $\frac{4}{2} = 2$