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Math Help - Direct Variation!

  1. #1
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    Direct Variation!

    Use the given values to write an equation that relates x and y.

    x=-9, y=3
    Find y when x=12
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  2. #2
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    Quote Originally Posted by SpaceGhost View Post
    Use the given values to write an equation that relates x and y.

    x=-9, y=3
    Find y when x=12
    Direct variation therefore y = kx. Substitute x = -9 and y = 3 to solve for k. Substitute the value of k and then use the formula to find y when x = 12.
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