Question

Evaluate the function for the given input values. For f(x) = 3x -1, when x = -2 and when x=7. Show both answers.

Answer 1

you just replace the x with its value
meaning f(-2)= 3(-2)-1=
-2f=(-6)-1=
-2f=-6=
f/-2=0.....-6/-2= 3
f=3

Answer 2

f(x)=3x-1
f(7)=3(7)-1
7f=21-1
7f=20
f/7=0..... 20/7=2.85
f=2.85