3. Solve to determine the unknown variable in the equation. What are the values of x? Solve this system of equations: y = x2-3x + 12 y = -2x + 14 1. Isolate one variable in the system of equations, if needed y = x2 โ 3x + 12 y = -2x + 14 2.Use substitution to create a one-variable equation. -2x + 14 = x2-3x + 12 O(-2, 1} O {-2,4} O {-1, 2} O{-1,4}