(03/16) 8th Pd. Unit 6A Test Improvement

What are the x-intercepts for g(x) = (x + 8)(x + 2)

• 8 and 2

• (8, 2)

• -8 and - 2

• (-8, -2)

Tags

CCSS.HSF-IF.C.7C

Write an equation of this graph in intercept (factored) form.

• h(x) = (x - 1)(x + 3)

• h(x) = (x + 1)(x - 3)

• h(x) = (x -1) (x-3)

• h(x) = (x+1)(x+3)

Tags

CCSS.HSA-SSE.B.3B

CCSS.HSF-IF.C.8A

Find the solutions of the function $y=(x+7)(2x-1)$  

• x= -7 and 1

• x= 7 and -1/2

• x= -7 and 1/2

• x= -7 and -1/2

Tags

CCSS.HSA-REI.B.4B

Find the axis of symmetry for
f(x) = x²- 8x + 15.

• x = -4
• x = 4
• y = 4
• y = -4

Determine the axis of symmetry for the function

 $f\left(x\right)=\left(x+8\right)\left(x-6\right)$  .

• x = -1

• x = 1

• x = -24

• x = -2

What is the range of the quadratic function?

•  $\left[1,\infty\right)$  

•  $\left[2,\infty\right)$  

•  $\left(-\infty,\infty\right)$  
  

•  $\left(-\infty,1\right]$  

Tags

CCSS.HSF-IF.C.7A

You jump off a 24 foot high cliff and your fall is modeled by the function:

h(t) = -16t² + 8t + 24

How long would it take you to hit the water?

• 8 seconds

• 1 second

• 1.5 seconds

• 1/4 second

What is the vertex of this parabola?

• (1, 2)
• (-1, -2)
• (1, -2)
• (-1, 2)

 $y=-3(x+5)^2-4$  
Convert the equation from vertex form to standard form.

• y = 9x² - 15x + 21

• y = -3x² - 75x - 4

• y = 9x² + 90x + 221

• y = -3x² - 30x - 79

What is the vertex of
f(x) = (x - 1)² + 2?

• (-1, 2)
• (-1, -2)
• (1, 2)
• (1, -2)