How do i write 3y-9x=24 in function notation

To write an expression in function notation, you must solve it for the dependent variable.

Assuming that you want the expression to be written in the form (i.e., assuming that x is the independent variable), we have to solve the expression for y, which means that we want y to remain alone on the left hand side, and move everything else to the right hand side.

So, first of all, we can add 9x to both sides to get

Finally, we divide both sides by 3:

b.-4 units

all you   do is count how many times you move