Question

Could somebody help please? I will give a medal!(:

(Hold on, i will upload the pic)

Answer 1

Its just #5 & #7 I'm having trouble with.

Answer 2

5 is tricky
it looks like there is a repeat in the first coordinate, those two points whose first coordinate is something like \(-1.5\)

Answer 3

so i would say "not a function" for that one
as for #7 \[f(x)=-x+4\]so
\[f(-2)=-(-2)+4=2+4=6\] etc

Answer 4

How do you add all that. Im not sure on how to do f(-)= -(-2) part @satellite73

Answer 5

would it just be that equation?

Answer 6

f(x) is defined already by an equation

when x = -2, we can then determine the value for f(-2)

Answer 7

okay thanks!