Algebra Graphing Quadratic Functions

How many seconds did it take for the rocket to reach its maximum height?

Mathematical Equivalence

ON

How many seconds did it take for the rocket to hit the ground?

Mathematical Equivalence

ON

What is the name of the graph of a quadratic functions?

• Curve

• Line

• Parabola

• Circle

Determine the vertex of:

y = -3x²-6x+9

• (1,0)

• (3,-36)

• (-1,18)

• (-1,12)

Does this parabola open up or down?

• y = -8x² +18x + 20

• up

• down

Does this parabola open up or down?

y = 4x² - 3x - 9

• up

• down

What is the formula to find the x-value of the vertex?

• -b/2c

• -b/2a

• b/2c

• b/2a

What is the y-intercept of 
f(x)=2x² + 4x + 6

• (6 , 0)

• (-6 , 0)

• (0, -6)

• (0 , 6)