Graphs 1
2 marks · EasyFind the gradient of the line joining (2, 5) and (4, 9).
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2 (±0)
Common mistakes: Subtracting in the wrong order
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Marking points
M1 · 1 mark · Uses the gradient formula: (9 – 5)/(4 – 2)
A1 · 1 mark · Correct answer 2
Worked solution
Gradient = (y2 – y1)/(x2 – x1) = (9 – 5)/(4 – 2) = 4/2 = 2