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8 December, 00:13

Which of these are the intercepts of the graph of y = 3x - 12?

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Answers (2)
  1. 8 December, 00:16
    0
    The answer is (4, 0), (0, - 12)

    y = 3x - 12

    x-intercept:

    y = 0

    0 = 3x - 12

    12 = 3x

    x = 12/3

    x = 4

    Intercept: (4, 0)

    y-intercept

    x = 0

    y = 3 * 0 - 12

    y = 0 - 12

    y = - 12

    Intercept: (0, - 12)
  2. 8 December, 00:24
    0
    x-intercept: 4

    y-intercept: - 12

    Step-by-step explanation:

    Well our formula is y=mx+b where m is the slope and b is the y-intercept. - 12 takes the place of the b, so - 12 is the y-intercept.

    To find the x-intercept, we need to make y=0.

    0=3x-12

    Add 12 to both sides

    12=3x

    Divide both sides by 3

    x=4

    The x-intercept is 4 and the y-intercept is - 12.
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