rewrite each equation as a function of x.?

Question

3x 4y 11

Answer 1

3x + 4y = 11
To write it as a function of x, you need to solve for y.
Subtract 3x from each side
4y = -3x + 11
Divide everything by 4
y = (-3/4)x + 11/4
Sometimes we write f(x) instead of y. (This way you can see that this is now a function of x).
f(x) = (-3/4)x + 11/4

Answer 2

Do you mean by this:
3x+4y=11

3x=-4y+11
x=-4/3y+11/3