How do you evaluate a function #f(x)=x+7# for a specific value, f(-3)?

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Answer 1 · 2016-11-20T17:23:01

#f(-3) = 4#

Substitute #-3# for #x# in the function:

#f(x) = x + 7#

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

#f(-3) = 4#

Answer 2 · 2016-11-20T17:25:41

#f(-3)=4#

To evaluate f(-3), substitute x = - 3 into f(x)

#rArrf(color(red)(-3))=(color(red)(-3))+7=4#