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16 November, 13:23

Find an equation of the line passing through (1,1), (8,-3/4)

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  1. 16 November, 14:50
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    y = (-1/4) x + 5/4

    Step-by-step explanation:

    Going from (1,1) to (8,-3/4), x increases by 7 and y decreases by 7/4. Thus, the slope of this line is m = rise / run = (-7/4) / 7, or - 1/4.

    The equation of this new line is y-1 = (-1/4) (x-1), or 4y - 4 = - x + 1.

    Then 4y = - x + 5, or y = (-1/4) x + 5/4.
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