Comparison of Quadratic Functions Cellphone Problems

Does this graph in the back have maximum or minimum value?

• maximum

• minimum

• neither

• both

What is the axis of symmetry for the following equation?
y=4x²-8x+9

• x=-8

• x=1

• x=-1

• x=2

The solutions of a quadratic equation are known as the _____.

• Vertices

• Roots

• Squares

• Formulas

If the blue graph is
f(x) = x² 
then the red must be...

• g(x) = x² - 5

• g(x) = x² + 5

• g(x) = (x - 5)²

• g(x) = (x + 5)²

• A

• B

• C

• D

Which student represents a Quadratic Function?

• Beth

• Maria

• Tracy

• None of the above

Which function is quadratic?

• f(x)

• h(x)

• g(x)

Compare ƒ(x) = -2x² - 8x + 20 to the graph of g(x) shown.  What can you conclude about the two functions?

•  ƒ(x) has a greater maximum than g(x).

• g(x) has a greater maximum than ƒ(x).

• ƒ(x) has a minimum, while g(x) has a maximum.

• g(x) and ƒ(x) have the same maximum.

• A

• B

• C

• D