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Pre Calculus

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Find the rate of change and the equation for the following: f(4)=1 and f(8)=7

  • Pre Calculus -

    rate of change= 7-1)/(8-4)=6/4

    f(x)=ratechange*x + b
    f(4)=6/4 *4 + b or
    1=6+b or b=-5

    equation: f(x)=6/4 x -5

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