## Algebra 1: Common Core (15th Edition)

You can find the point of intersection two ways; one by graphing and finding where the lines intersect or by setting the equations equal to each other. We use the second method: $x - 4 = -x$ (subtract x from both sides) $-4 = -2x$ (then divide each side by -2) $x= 2$ Then, we plug this in to one of the equations to get y: $y= -2$