Question

@acxbox22 Can you go over my work to see if its right? I'm not positive It's correct.

Answer 1

can you show it?

Answer 2

This was my assignment for question 2 I got f(3)=5. Is that correct?

Answer 3

correct

Answer 4

Alright thank you :)

Answer 5

For question 3 would this be correct @zimmah You would substitute the f(x) with Y. Your equation would then look like y=4x-7. After that you would switch out the Y and X. Then the function would look like x=4y-7 . Then add the 7 on both sides. The seven then cancels out. You should get x-4=11y, Then you should divide the 11 by both sides. Your answer should be (fx)=1/11x-4/11.

Answer 6

perfect...looks good

Answer 7

except
x=4y-7
x+7=4y
x/4 +7/4=y

Answer 8

the 7 doesnt cancel out

Answer 9

So you wouldn't cancel out the seven at all?

Answer 10

no you would just add the 7 on both sides to isolate 4y

Answer 11

Can you help me with my last problem. not give me the answer but explain it? given the equation g(x)=-2x+6 how can we evaluate f(g(x))?

Answer 12

you know how gx = -2x+6
substitute that for x in function f(x)

Answer 13

so f(g(x))=4(-2x+6)+6

Answer 14

Okay okay. I got it. Thank you

Answer 15

no problem