1) What is the vertex of the quadratic function y = 3x - 12x + 8? a. (-12,8)
b. (2.-4)
c.(-2, 44)
d. (2.-10)
2) Which of the following quadratics will display a parabola that opens up when
graphed?
a. y = -2x2 - 8x + 1
b. y = -5x2 + x
c. y = -x2 - 6x + 9
d. y = x2 + 5x - 3
3) Which of the following quadratics does NOT have an axis of symmetry of x = 1?
a. y = 2x2 - 4x + 1
b. y = -5x2 + 10x + 13
C. y = -3x2 - 6x + 9
d. y = 4x2 - 8x - 7
4) Which of the following is TRUE about the quadratic function y = -5x2 + 20x + 30?
a. The parabola will open up.
b. The vertex is (-2, -30).
C. The axis of symmetry is x = 20.
d. The parabola will have a maximum.