Graph the function. y = -6x2 - 12x -1 a. On a coordinate plane, a parabola opens up and goes through (0, 0), has a vertex at (1, negative 7) and goes through (2, 0). c. On a coordinate plane, a parabola opens down and goes through (negative 2, 0), has a vertex at (negative 1, 5), and goes through (0, negative 1). b. On a coordinate plane, a parabola opens up and goes through (negative 2, 4), has a vertex at (negative 0.5, negative 1.8), and goes through (1, 3).