Question

I'm having some trouble with:
f(x)=7x+4/9x-2
f(-1)
f(-x)
-f(x)
f(x+h)

Answer 1

f(-1) just sub in x = -1 to ur equation
f(-x) is just sub in x = -x...
- f(x) is just negative ur equation..
f(x+h) is u replace x by (x+h)

Answer 2

so it would be 7(-1)+4(-1) and so forth?

Answer 3

yes..

Answer 4

but why 4(-1).. when there is a x

Answer 5

and the same with the denominator then divide?

Answer 6

u only substitute when there is a x

Answer 7

oh so 7(-1)+4

Answer 8

yeap

Answer 9

okay thank you