Question

Rewrite the equation so that y is a function of x:
1. 2/3y+4=2x

2. 1/2(y+5)+4x=3x

3. Use the result in Ex. 1 to find y when x= -1, 0, and 2.

4. Use the result in Ex. 2 to find y when x= -1, 0, and 2.

Thank you very much for any help.

Answer 1

1. 2/3y+4=2x
(2/3)y=2x-4
f(x)=y=(3/2)(2x-4)
=3x-6
f(-1)=3(-1)-6=-9
f(0)=3(0)-6=-6
f(2)=3(2)-6=0

I'm sure you would now be able to try #2 & #4.