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20 August, 13:27

In the equation y=-3x as x increases what does y do

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Answers (2)
  1. 20 August, 13:34
    0
    Because the slope is negative, you would expect that y decreases and x increases. To check this, you can substitute values for x. At x=0, y=0. Increase x to 1, and y=-3.
  2. 20 August, 13:46
    0
    If x increases then y will decrease

    prove:

    y = - 3x

    if x = - 1, then y = - 3 (-1) = 3

    if x = 0, then y = - 3 (0) = 0

    if x = 1, then y = - 3 (1) = - 3

    if x = 2, then y = - 3 (2) = - 6

    if x = 3, then y = - 3 (3) = - 9

    and so on ...
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