Question 24

loading...

Prev/Next links

waecmaths question: 

A straight line passes through the points P(1, 2) and Q(5, 8). Calculate the gradient of the line PQ 

Option A: 

$\tfrac{3}{5}$

Option B: 

$\tfrac{2}{3}$

Option C: 

$\tfrac{3}{2}$

Option D: 

$\tfrac{5}{3}$

waecmaths solution: 

$\begin{align}  & P({{x}_{1}},{{y}_{1}})=(1,2) \\ & Q({{x}_{2}},{{y}_{2}})=(5,8) \\ & gradient=m=\frac{{{y}_{2}}-{{y}_{1}}}{{{x}_{2}}-{{x}_{1}}} \\ & m=\frac{8-2}{5-1} \\ & m=\frac{6}{4}=\frac{3}{2} \\\end{align}$

maths year: 
maths topics: