Simply substitute (y-1) into the first equation instead of x. You will get (y-1)^2 = 3y + 2. Simplify y^2 - 2y + 1 = 3y + 2 y^2 - 5y - 1 = 0. Next apply the quadratic formula and find two values for y. Having y, calculate respective values for x. There are two solution --- two intersection points.