Quadratic Functions and Equations Unit Review

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

Solve the quadratic equation using square root:

5m² + 1 = 6

• m = 0

• m = 1 or -1

• m = √7

• m = 7/5 m = -7/5

Solve the quadratic equation using square root.

• √3

• ±√3

• -3

• No real solution

How many answers does the equation a² = 16 have?

• none
• infinitely many
• 2
• 1

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

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

• a

• h

• k