Question 1 • Mathematics 8
Use the slope formula: change in y divided by change in x. From (-7, 5) to (9, 13), the change in y is 13 − 5 = 8 and the change in x is 9 − (−7) = 16. The slope is 8/16 = 1/2, so (9, 13), choice D, lies on the line.
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