Question

Find the x- and y-intercepts of the line 5x + 17y = -25

and

Find the x- and y-intercepts of the line 6x – 7y = -21

Answers

  1. To find the x- and y-intercepts of a line, we can set either the x-coordinate or the y-coordinate to 0 and solve for the other coordinate.
    For the first line, 5x + 17y = -25, we can find the x-intercept by setting y = 0:
    5x + 17(0) = -25
    5x = -25
    x = -5
    Therefore, the x-intercept of the line 5x + 17y = -25 is (-5, 0).
    To find the y-intercept, we can set x = 0:
    5(0) + 17y = -25
    17y = -25
    y = -25 / 17
    y = -1.47
    Therefore, the y-intercept of the line 5x + 17y = -25 is (0, -1.47).
    For the second line, 6x – 7y = -21, we can find the x-intercept by setting y = 0:
    6x – 7(0) = -21
    6x = -21
    x = -21 / 6
    x = -3.5
    Therefore, the x-intercept of the line 6x – 7y = -21 is (-3.5, 0).
    To find the y-intercept, we can set x = 0:
    6(0) – 7y = -21
    -7y = -21
    y = 21 / -7
    y = -3
    Therefore, the y-intercept of the line 6x – 7y = -21 is (0, -3).

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  2. Answer:
    (0, -25/17)
    Step-by-step explanation:
    To find the x-intercept of a line, we need to set y equal to zero and solve for x. To find the y-intercept, we need to set x equal to zero and solve for y.
    For the line 5x + 17y = -25, setting y equal to zero gives us:
    5x + 17(0) = -25
    5x = -25
    x = -5
    Thus, the x-intercept is (-5, 0).
    Setting x equal to zero gives us:
    5(0) + 17y = -25
    17y = -25
    y = -25/17
    Thus, the y-intercept is (0, -25/17).
    Therefore, the x-intercept is (-5, 0) and the y-intercept is (0, -25/17).

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