Question 69532
The standard form of an equation with two variables (in this case the two variables are x and y) is:

   {{{Ax + By = C}}}

in which A, B, and C are constants with A and B not both zero.

So what has to be done for this problem is to rearrange y = 3x -1 into the above form.

Subtract 3x from both sides. If you do, you get:

{{{ -3x + y = (3x - 3x) -1}}}

This simplifies to:

{{{ -3x + y = -1}}}

If you compare this to the standard form, you will see that it is the same form in which A = -3, B = 1, and C = -1.

Hope that helps you to see how to arrange linear equations with two variables into standard form.