Quadratic Functions

The equation y = x² + 3x - 18 is graphed.  Based on this graph, what are the roots (x-intercepts) of the equation x² + 3x - 18 = 0?

• -3 and 6
• 0 and -18
• 3 and -6
• 3 and -18

How many roots does this parabola have? 

• 3
• 2
• 0
• 1

Tags

CCSS.HSF-IF.C.7A

Use the graph to determine the solutions.
*Hint: Solutions = roots = zeros = x-intercepts

• -1 and -3
• 1 and -3
• 1 and 3
• -1 and 3

The equation y = x²  is graphed.  Based on this graph, what are the roots of the equation x²  = 0?

• 0
• -1 and 1
• 2 and 0
• y

How many solutions (roots) does this graph have?

• one
• two
• no solutions
• cannot be determined

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

• (6 , 0)
• (-6 , 0)
• (0, -6)
• (0 , 6)

Tags

CCSS.HSF-IF.C.7A

.How many zeros does this parabola have? 

• 3
• 2
• 0
• 1

Tags

CCSS.HSF-IF.C.7A

What are the roots of the function
f(x)= (x - 2)(x + 3)?

• x = - 2 or x = 3
• x = 2 or x = -3
• The are no real roots
• x = 2 or x = 3

Tags

CCSS.HSF-IF.C.7C

Does this graph have maximum or minimum value?

• maximum

• minimum

• neither

• both

A parabola has a vertex at (-3,2). Where is the axis of symmetry?

• y = -2
• x = 3
• x = -3
• y = 2