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16 May, 20:41

Sketch a graph of the linear relation 8x+2y = 24. Explain the procedure.

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  1. 16 May, 21:07
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    First we need the slope and the y int which can be found by putting ur equation in y = mx + b form, where m is ur slope and b is ur y int.

    8x + 2y = 24

    2y = - 8x + 24

    y = - 4x + 12 ... so the slope is - 4, and the y int is 12 or (0,12)

    to find the x int, sub in 0 for y and solve for x ... in either the original equation or the slope intercept equation

    8x + 2y = 24

    8x + 2 (0) = 24

    8x = 24

    x = 24/8

    x = 3 ... so the x int is 3 or (3,0)

    now plot ur intercepts (3,0) and (0,12) ... now start at ur y int (0,12) ... and since ur slope is - 4, u come down 4 spaces, then to the right 1 space, then down 4, and to the right 1 ... keep doing this and u should cross the x axis at (3,0)
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