2x+y=5 To put this in slope intercept form, you simply have to get y by itself on the left side of the equation. 2x+y=5 2x+y-2x=5-2x y=-2x+5 Now, I had to switch the right side around like that, because slope intercept form is y=mx+b Because you're subtracting 2x from 5, it becomes 5 added to -2x when it's put in the correct form. y=-2x+5