Which graph correctly solves the system of equations below? y = x2 + 2x + 3 y = −x2 + 3 two quadratic graphs opening up. they intersect at 0, 3. two quadratic graphs opening down. they intersect at 0, 3. quadratic graph opening up and quadratic graph opening down. they intersect at 1, 4 and 0, 3. quadratic graph opening up and quadratic graph opening down. they intersect at negative 1, 2 and 0, 3.