1. Chapter 8 Section 4 Writing Rules for Linear Functions February 10 th , 2009
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3. Function Rule y = 3 x + 7 f ( x ) = 3 x + 7 output input Read it as “f of x is equal to the product of 3 and x, plus 7”. The Function rule is the Equation that you come up with to compare the Input and the Output.
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10. Write the rule for each linear function. f(x) = 2x, because when x = 0, y = 0. f(x) = -2x, because when x = 0, y = 0. f(x) = 2x + 1, because when x = 0, y = 1. 4 2 2 1 0 0 -2 -1 f ( x ) x -12 6 -6 3 0 0 6 -3 f ( x ) x 1 0 -3 -2 -7 -4 -11 -6 f ( x ) x