Quadratic Equations and Functions

What is the vertex?

y = 2x² + 12x + 5

• (6,149)

• (-3,-13)

• (3, 59)

• (-6,5)

What is the vertex form of the equation plotted?

• y = (x-2)² + 1

• y = (x-2)² - 1

• y = - (x+2)² - 1

• y = (x+2)² - 1

What piece of information does c identify in the following equation?
y=ax²+bx+c

• Zeroes

• Axis of Symmetry

• Direction

• y-intercept

Find the vertex of 
f(x) = -x² - 4x + 12

• (-2, 16)

• (2, 0)

• (2, 4)

• (-2, 4)

Joe Mauer hits a fly ball.  You can track the height of the ball using the equation:   h(t) = -16t² + 140t + 2  
What was the starting
                        height of the ball?                                                                                      

• -16 feet

• 140 feet

• 2 feet

• 0 feet

What is the vertex?

y = 4(x - 7)² - 8

• (7,8)

• (7,-8)

• (-7,8)

• (-7,-8)

Given the revenue function R(x) = -500x²+8000x+100. How can you find the max revenue?

• Find the Vertex, then the max revenue will be the x value of the vertex.

• Find the Vertex, then the max revenue will be the y value of the vertex.

• The max revenue is the same as the y-intercept

• Find the zeros and the larger value is the max revenue.

Part of the quadratic formula is shown. What does the question mark represent?

When you use the quadratic formula to solve a quadratic equation, which is true?

• It always yields rational solutions.

• It always yields irrational solutions.

• It always yields 2 real solutions.

• It always yields 0, 1, or 2 real solutions.

To complete the square in the left side of the given quadratic equation, what number will you add to both sides? (Type the number only).