Question 4 • Mathematics 8
The slope through (-5, 2) and (10, -1) is (-1 - 2) / (10 - (-5)) = -3/15 = -1/5. Using y = mx + b with the point (10, -1), we get -1 = (-1/5)(10) + b, so b = 1. Therefore, the equation is y = -1/5 x + 1, choice D.
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