Question 5 • Mathematics 8
The slope through (3, 95) and (11, 12) is (12 − 95) ÷ (11 − 3) = −83 ÷ 8 = −10.375. Substituting (3, 95) into y = mx + b gives b = 95 − (−10.375 × 3) = 126.125. Rounded to the nearest ten-thousandth, the equation is y = −10.3750x + 126.1250, which is choice A.
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