Question on: JAMB Mathematics - 2010
Find the gradient of the line passing through the points P(1, 1) and Q(2, 5).
A
3
B
2
C
5
D
4
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Correct Option: D
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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