First of all, I would like to thank Cosmos for deleting my incorrect answer. (applause)
Now, we will proceed to our main program.
Manipulate -6y + 2x = 18 into the y = mx + b form.
Subtract 2x from both sides
-6y = -2x + 18
Divide both sides by -6

Simplify

The slope will be the coefficient of x.
