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8 March, 15:07

X-intercept and y-intercept of 9.3x+4.2y+3.9=0

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  1. 8 March, 15:14
    0
    y intercept = - 0.93

    x intercept = - 0.42

    Step-by-step explanation:

    To get x intercept, substitute y for 0 and solve for x.

    To get y intercept, substitute x for 0 and solve for y.

    X intercept:

    9.3x + 4.2y + 3.9 = 0

    9.3x + 4.2 (0) + 3.9 = 0

    9.3x + 3.9 = 0

    Subtract 3.9 to get it on the other side

    9.3x + 3.9 - 3.9 = 0 - 3.9

    9.3x = - 3.9

    Divide 9.3 to get x by itself

    (9.3x) / (9.3) = (-3.9) / (3.9)

    x = - 0.419355

    Since there are some extra numbers, I will round it to the nearest hundredth to make it easier

    -0.419355 = - 0.42

    Y intercept:

    9.3x + 4.2y + 3.9 = 0

    9.3 (0) + 4.2y + 3.9 = 0

    4.2y + 3.9 = 0

    Subtract 3.9 to get it on the other side

    4.2y + 3.9 - 3.9 = 0 - 3.9

    4.2y = - 3.9

    Divide 4.2 to get y by itself

    (4.2x) / (4.2) = (-3.9) / (4.2)

    x = - 0.928571

    Round answer to nearest hundredths

    -0.928571 = - 0.93

    Notes:

    If your answer is an extended decimal number, round it to the nearest hundredths to make it easier
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