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Given f(x)= -6x+7, what are f(3) and f(-5). show your work please!!

f (3)=

f (-5)=

User Taruxtin
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1 Answer

7 votes

Answer:

f(3) = -11

f(-5) = 37

Explanation:

f(x) = -6x + 7

We want to find f(3) and f(-5)

To do so we substitute the input with any x in the equation and evaluate.

f(3) = -6x + 7

==> substitute all x's with the input, 3

f(3) = -6(3) + 7

==> multiply -6 and 3

f(3) = -18 + 7

==> add -18 and 7

f(3) = -11

f(-5) = -6x + 7

==> substitute all x's with the input -5

f(-5) = -6(-5) + 7

==> multiply -6 and -5

f(-5) = 30 + 7

==> add 30 and 7

f(-5) = 37

User Nat Dempkowski
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7.6k points