Quadratic Functions

What is the vertex of this parabola?

• (-5,1)

• (1,0)

• (-2,-9)

• (0,-5)

Which value is the y-intercept?

• (-4, 0)

• (-1, -9)

• (0, -8)

• (2, 0)

Tags

CCSS.HSF-IF.C.7A

What are the zeros of this graph?

• x = {-4, 2}

• (-4, 0 ) and (2, 0)

• x = {-1, 0}

• (-1, 9 ) and (0, -8)

Tags

CCSS.HSF-IF.C.7A

Which value is the vertex?

• (-4, 0)

• (-1, -9)

• (0, -8)

• (2, 0)

Factorise the expression:

x² + 9x + 20

• (x + 4)(x + 5)

• (x - 4)(x - 5)

• (x + 3)(x + 6)

• (x - 3)(x - 6)

Solve using the Quadratic Formula:

x² + 4x + 3 = 0

• x = 1 and x = 3

• x = 6 and x = -2

• x = -1 and x = -3

Tags

CCSS.HSA-REI.B.4B

Use the graph to determine the solutions.

• -1 and -3

• 1 and -3

• 1 and 3

• -1 and 3

Fireworks are fired from the roof of a 100-foot building. The equation h = -16t² +84t + 100 models the height, h, of the fireworks at any given time, t. How high do the fireworks get? (you might find Desmos will help you!)

• 2.625

• 210

• 100

• 200

• 210.25

Factorise the expression:

x² + 5x - 24

• (x + 8)(x - 3)

• (x + 3)(x - 8)

• (x + 6)(x - 4)

• (x + 4)(x - 6)

Determine the values of
a, b, and c for
the quadratic equation: 
4x² – 8x = 3

• a = 4, b = -8, c = 3

• a = 4, b =-8, c =-3

• a = 4, b = 8, c = 3

• a = 4, b = 8, c = -3