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20 August, 21:40

For what value of α is (α, 9) a solution of the equation y=2x+1?

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  1. 20 August, 22:06
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    Treat (a, 9) as an x and y value

    Set the equation equal to 9

    9 = 2x+1

    8 = 2x subtract one

    4 = x divide by 2

    a must be equal to four
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