1) y = ½(x + 4)(x - 5)
x-intercepts: (-4, 0), (5, 0)
Axis of Symmetry: x = 0.5
Vertex: (0.5, -10.125)
Opens up
Slope to one unit from vertex: 1
y-intercept: (0, -10)
2) y = -¼(x - 3)(x + 7)
x-intercepts: (3, 0), (-7, 0)
Axis of Symmetry: x = -2
Vertex: (-2, 6.25)
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Slope to one unit from vertex: -1
y-intercept: (0, 5.25)
3) y = 2(x - 2)(x - 3)
x-intercepts: (2, 0), (3, 0)
Axis of Symmetry: x = 2.5
Vertex: (2.5, -0.5)
Opens up
Slope to one unit from vertex: 2
y-intercept: (0, 12)
4) y = -⅓(x + 1)(x - 5)
x-intercepts: (-1, 0), (5, 0)
Axis of Symmetry: x = 2
Vertex: (2, 3)
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Slope to one unit from vertex: -2
y-intercept: (0, 5/3)
5) y = 2(x + 2)(x - 1)
x-intercepts: (-2, 0), (1, 0)
Axis of Symmetry: x = -0.5
Vertex: (-0.5, -4.5)
Opens up
Slope to one unit from vertex: 2
y-intercept: (0, -4)
6) y = -(x - 5)(x - 3)
x-intercepts: (5, 0), (3, 0)
Axis of Symmetry: x = 4
Vertex: (4, 1)
Opens down
Slope to one unit from vertex: -2
y-intercept: (0, -15)
Parent Tip: Review the logic above to help your child master the concept of quadratic functions worksheet with answers.
