Standard Form:
Standard form means that the equation is in the form Ax + By = C.
A, B, and C are constants (real numbers), but that cant be fractions, and A must be positive.
You are given the equation:
9y = 4x - 18
All we have to do for this equation, to put it into standard form, is subtract 4x from both sides and divide by a -1 to make the Ax term positive. Here we go:
-4x + 9y = -18
4x - 9y = 18 Here is your answer :D
*You already know that the line is linear because x is only raised to the 1st power.