Question 905653: what is the range of the function f(x)= 2x+7 when the domain is {1,3,5}?
Answer by Theo(13342)   (Show Source):
You can put this solution on YOUR website! your function is f(x) = 2x + 7
your domain is {1,3,5}
when x = 1, f(x) = 2*1+7 = 2+7 = 9
when x = 3, f(x) = 2*3+7 = 6+7 = 13
when x = 5, f(x) = 2*5+7 = 10+7 = 17
your domain is {1,3,5}
your range is {9,13,17}
the range is determined by the domain.
since your domain is only those 3 numbers, then your range is only the numbers generated by the equation using those numbers as the argument of the function.
you get f(1) and f(3) and f(5) as the only possible values in your range.
f(1) = 9
f(3) = 13
f(5) = 17
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