Question: how to answer Define a function f : R - R by the formula f(x) = 8x - 9. Prove that fis onto. Let y

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how to answer Define a function f : R - R by the
Define a function f : R - R by the formula f(x) = 8x - 9. Prove that fis onto. Let y E R. Then ER, and Fy + 9 8 = 8 8 9 =

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