Unit 8 Review: Quadratic Equations and Functions

What is another word for zeros?

• y-intercepts

• x-intercepts

• vertex

• axis of symmetry

Which of the following equations matches standard form of a quadratic?

• ax + by = c
• y = a(x - h)² + k
• y = ax² + bx + c
• y = mx + b

When do you use the plus or minus symbol?
±

• After taking the square root of both sides
• After adding the square to both sides
• After taking half of b
• After setting the equation equal to zero

Tags

CCSS.HSA-REI.B.4B

Solve the quadratic equation using square root:

5m² + 1 = 6

• m = 0

• m = 1 or -1

• m = √7

• m = 7/5 m = -7/5

Tags

CCSS.HSA-REI.B.4B

Solve the quadratic equation using square root.

• √3

• ±√3

• -3

• No real solution

Tags

CCSS.HSA-REI.B.4B

How many answers does the equation a² = 16 have?

• none
• infinitely many
• 2
• 1

Tags

CCSS.8.EE.A.2

What is the axis of symmetry?

• the slope of the graph

• a vertical line through the vertex that cuts the parabola in half

• a way to spin my pencil

• the x-axis of the coordinate plane

Find the axis of symmetry for

f(x) = x² - 8x + 15.

• x = - 4

• x = 4

• y = 4

• y = - 4

In vertex form, which letter determines the vertical movement (up/down) of the parabola?

• a

• h

• k

Tags

CCSS.HSF-IF.C.7A

In vertex form, which letter determines the horizontal movement (left/right) of the parabola?

• a

• h

• k