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Graph Quadratics from Standard Form
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ACCUPLACER
AAF.052 Graph Quadratics from Standard Form
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Match the quadratic y = -(2/3)x
2
- 4x - 5 with its graph. Look for the vertex and whether the parabola opens up or down.
A
Graph A: opens up; vertex (-3, 1); axis x = -3; y-intercept (0, 7); no x-intercepts
B
Graph B: opens down; vertex (-3, -1); axis x = -3; y-intercept (0, -7); no x-intercepts
C
Graph C: opens down; vertex (-3, 1); axis x = -3; y-intercept (0, -5); x-intercepts approximately at (-4.22, 0) and (-1.78, 0)
D
Graph D: opens down; vertex (3, 1); axis x = 3; y-intercept (0, -5); x-intercepts approximately at (1.78, 0) and (4.22, 0)
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