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What is the range of the function f(x) = 4x + 9, given the domain D = {-4, -2, 0, 2}?
A. R = {-7, -1, 9, 17}
B. R = {-17, -9, -1, 17}
C. R = {1, 7, 9, 17}
D. R = {-7, 1, 9, 17}

Sagot :

sqdancefan

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Answer:

  D.  R = {-7, 1, 9, 17}

Step-by-step explanation:

Substitute the given values for x to see what the y-values are.

  f(x) = 4x +9

  f({-4, -2, 0, 2}) = 4{-4, -2, 0, 2} +9 = {-16, -8, 0, 8} +9

  = {-7, 1, 9, 17} . . . . . matches choice D

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