What is the gradient of the straight line through the points (1, 2) and (5, 10)?
Answer and explanation
Correct answer: A. 2, because the rise of 8 happens over a run of 4
- Step 1: Rise = 10 - 2 = 8 and run = 5 - 1 = 4. Step 2. Gradient = 8 / 4 = 2. Answer: 2. Why not the others: 4 uses the wrong quantities; 1/2 inverts the fraction; 8 forgets to divide by the run.
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