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7 December, 09:45

Find the x - and y-intercept of the line.

-7/5x - 4y = 7

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  1. 7 December, 09:56
    0
    First, isolate the variables to either side.

    4y = - 7/5x - 7

    Second, simplify in terms of y.

    y = - 7/20x - 7/4

    Third, plug 0 in for y to find the y intercept and factor the x side to make it simple. Then, find the value that makes the x-factor zero.

    0 = (-7/4) (1/5x + 1)

    1/5x + 1 = 0

    1/5x = - 1

    x = - 5

    The x-intercept is (-5,0)

    Fourth, plug zero in for x to find the y-intercept.

    y = - 7/20 * (0) - 7/4

    y = - 7/4

    Therefore, the y-intercept is (0,-7/4) and the x-intercept is (-5,0).
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