allyssaflemming allyssaflemming

19-10-2017
Mathematics

contestada

f(x)=x+7
if you know the domain is {-9,-3} then the range must be?

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Edufirst Edufirst

19-10-2017

Domain is the set of x-values and range is the set of images f(x).

x           F(x) = x + 7

-9         -9 + 7 = -2

-8         -8 + 7 = -1

-7          -7 + 7 = 0

-6           -6 + 7 = 1

-5           -5 + 7 = 2

-4           -4 + 7 = 3

-3           -3 + 7 = 4

So the range is {-2,4} <------ answer

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