How to evaluate the function f(x)=9x+2 given independent value a. f(-8) b. f(x+6) c. f(-x) ?

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Answer 1 · 2018-06-09T04:26:23

Please see below.

.

#f(x)=9x+2#

#color(red)(a))#

To find #f(-8)#, we plug in #-8# wherever we see #x# in #f(x)#:

#f(-8)=9(-8)+2=-72+2=-70#

Similarly:

#color(red)(b))#

#f(x+6)=9((x+6)+2=9x+54+2=9x+56#

#color(red)(c))#

#f(-x)=9(-x)+2=-9x+2#