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Math Help - need help functions

  1. #1
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    need help functions

    Solve each equation if the domain is (-2,-1,0,2,4)

    y=-4x+10

    4-2x=5y

    -x+3y=1
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  2. #2
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    Quote Originally Posted by gracy View Post
    Solve each equation if the domain is (-2,-1,0,2,4)

    y=-4x+10

    4-2x=5y

    -x+3y=1
    Just substitute each element of the domain into the equation and that gives you the range.

    The first:
    y = -4x + 10

    So inputting the domain we get a range of: (18, 14, 10, 2, -6)
    Thus the solution set is {(-2, 18), (-1, 14), (0, 10), (2, 2), (4, -6)}.

    The other two are done the same way.

    -Dan
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