Act Prep Quadratics

• x = ± 6/5

• x = 6/5

• x = 0, 6/5

• There are no zeros for z.

Tags

CCSS.HSA-SSE.B.3B

CCSS.HSF-IF.C.8A

• x = ± 8/3

• x = 8/3

• x = 0, 8/3

• There are no zeros for k.

Tags

CCSS.HSA-SSE.B.3B

CCSS.HSF-IF.C.8A

What are the increasing and decreasing intervals for the function f(x) = (x+2)²-1?

• Increasing: (−∞, −2)

  Decreasing: (−2, ∞)

• Increasing: (−2, ∞)

  Decreasing: (−∞, -2)

• Increasing: (−1, ∞)

  Decreasing: (−∞, -1)

• Increasing: (−∞, −1)

  Decreasing: (−1, ∞)

What is the vertex of this equation?
y = (x + 3)² -7

• (3, 7)

• (-3, -7)

• (-3, 7)

• (3, -7)

• (3,8)

• (-3,-8)

• (-3,8)

• (3,-8)

What are the x-intercepts of the graph of 2x² + 7x - 15 = 0?

• x = -3/2, 5

• x = -7/10, 5

• x = -5, 3/2

• x = -5, 7/10

What are the x-intercepts of the graph of -4x²+25x+21 = 0?

• x = -7, -3/4

• x = -3/4, 7

• x = -7, 3/4

• x = 3/4, 7

• (2,3)

• (-3,1)

• (2,-3)

• (3,1)

Tags

CCSS.HSF-IF.C.7D

• a = 8, a = 5

• a = 2

• a = 8

• a = 8, a = 2

When x = 3 and y = 5, by how much does the value of 3x2 – 2y exceed the value of 2x2 – 3y ?

• 4

• 14

• 16

• 20

• 50

Tags

CCSS.6.EE.A.2C