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31 August, 10:38

What are the x - and y-intercepts of y=-3x - 9?

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Answers (2)
  1. 31 August, 10:50
    0
    x-intercept (-3,0)

    y-intercept (0,-9)

    Step-by-step explanation:

    The x-intercepts can be found by setting y to 0 and solving for x.

    y=-3x-9

    0=-3x-9

    Add 9 on both sides:

    9=-3x

    Divide both sides by - 3:

    9/-3=x

    -3=x

    The x-intercept is (-3,0).

    The y-intercepts can be found by setting x to 0 and solving for y.

    y=-3x-9

    y=-3 (0) - 9

    y=0-9

    y=-9

    The y-intercept is (0,-9).
  2. 31 August, 10:51
    0
    x-intercept: x = - 3 → (-3, 0) y-intercept: y = - 9 → (0, - 9)

    Step-by-step explanation:

    x-intercept is for y = 0.

    y-intercept is for x = 0.

    y = - 3x - 9

    x-intercept (put y = 0):

    0 = - 3x - 9 add 9 to both sides

    9 = - 3x divide both sides by (-3)

    -3 = x → x = - 3

    y-intercept (put x = 0):

    y = - 3 (0) - 9

    y = 0 - 9

    y = - 9
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