Question

Evaluate the function for the given input value.
For f(x) = -2x, when x = 4 how would i solve this?

Answer 1

f(x)=y
x= 4
so substitute 4 for x

Answer 2

put that feller in that there function and you got yourself a nice little output. f[x]=-2x so at x=4 f[4]=-2(4)=??

Answer 3

i dont understan :(

Answer 4

just substitute 4 into x...

so f(x)= -2(4)= -8

Answer 5

i dont divide?

Answer 6

there is a visual of what is going on