Review for Quadratics Test

What is the axis of symmetry?
y = 3x² - 6x + 4

• x=1

• x=-6

• x=2

• x=-1

The following quadratic is going to be solved by completing the square. Which choice shows Step 2?

Problem : x² + 12x = 13

Step 1 : x² + 12x + 36 = 49

Step 2 : ​ ?

Tags

CCSS.HSA-REI.B.4B

Tags

CCSS.HSA-REI.B.4B

Given a graph, how can you find the "solutions" to a quadratic?

• Copy off neighbor

• Plug into calculator

• Solutions are where the quadratic crosses the x axis

• Magic 8 Ball

What are the green dots called?

• roots

• vertex

• solutions

• x intercepts

Tags

CCSS.HSF-IF.C.7A

What are the x- intercepts?

• (0,0) and (0,4)

• (0,0) and (4,0)

• y= 0

• x= 2

Tags

CCSS.HSF-IF.C.7A

Determine the values of a, b, and c for the quadratic equation:

4x² – 8x = 3

• a = 4, b = -8, c = 3

• a = 4, b =-8, c =-3

• a = 4, b = 8, c = 3

• a = 4, b = 8, c = -3

If there are no real solutions, the discriminant is

• zero

• a postive number

• a negative number

• a perfect square

Tags

CCSS.HSA-REI.B.4B

If there is one solution, the discriminant is . . .

• zero

• a postive number

• a negative number

• a perfect square

Tags

CCSS.HSA-REI.B.4B

Tags

CCSS.HSA-REI.B.4B