Find the gradient of the line passing through the points P(1, 1) and Q(2, 5).

Explanation

Let (x1, y1) = (1, 1) and (x2, y2)= (2, 5)

then gradient m of \(\bar{PQ}\) is

m = \(\frac{y_2 - y_1}{x_2 - x_1}\) = \(\frac{5 - 1}{2 - 1}\)

= \(\frac{4}{1}\)

= 4

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