Chapter 4 Review

Find the y-intercept of y = 2x² – 2x + 1

• 2
• –2
• 1
• –1

Which equation represents the axis of symmetry of the function y = –2x²+4x-6?

• y=1
• x=1
• x=3
• x=–3

What are the coordinates of the vertex of the graph of the function y=–x²+6x–11?

• (3,–2)
• (3,16)
• (–3,–29)
• (–3,–20)

Use the graph of the function
f(x)=–2x²+4x+6 to find the solution(s) of the equation –2x²+4x+6=0.

• x=–1
• x=3
• x=–1 and x=3
• x=1and x=8 

Which answer choice describes
f(x) = –3x² +7x – 2 accurately?

• opens up with a maximum
• opens up with a minimum
• opens down with a maximum
• opens down with a minimum 

What is the vertex form of this quadratic?

• y = –(x + 2)² – 4
• y = (x – 2)² + 4
• y = (x – 2)² – 4
• y = –(x – 2)² – 4

What is the axis of symmetry of the given function?

• y = 1
• y = –1
• x = 1
• x = –1

Identify the vertex and whether the graph opens up or down.

• (–1, 4); opens up
• (–1, 4); opens down
• (1, 4); opens up
• (1, 4); opens down

Find the value of c that should be added to the expression to complete the square: x² + 16x + c

• 16
• 8
• 64
• 32

What is the first step to solving THIS equation by completing the square?
a² + 10a + 21 = 0

• Set the equation equal to zero
• Divide 10 by 2 and add the result to both sides
• Add a² and 10a together
• Subtract the 21