Question

The slope of the line below is 1. write the point-slope equation for the line using the coordinates of the labeled point. 7,8

Answer 1

General equation : (y2 - y1)/(x2 - x1) = slope

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Substitute slope = 1 into the equation:

(y2 - y1)/(x2 - x1) = 1

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Substitute (7, 8) into the equation:

(y - 8)/(x - 7) = 1

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Cross multiply:

y - 8 = x - 7

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Answer: y - 8 = x - 7