Solutions of Quadratics

Solve: x² + 9x + 18 = 0

• x = 1 and 18
• x = 3 and 6
• x = -3 and -6
• x = 2 and 9

Tags

CCSS.HSA-REI.B.4B

Solve: x² - 25 = 0

• x = 5
• x = -5
• x = 5 and -5
• x = 10

Tags

CCSS.HSA-REI.B.4B

Solve: x² - 6x = 40

• x = 10
• x = 4
• x = 10 and -4
• x = -10 and 4

Tags

CCSS.HSA-REI.B.4B

What are the zeros?

• x= 0 and x= -4
• x= 0 and x= 4
• y= 0
• x= 2

Tags

CCSS.HSA-SSE.B.3B

CCSS.HSF-IF.C.8A

Does this graph have a maximum or minimum?

• Minimum
• Maximum

Tags

CCSS.HSF-IF.C.7A

How many solutions does this graph have?

• one
• two
• no solutions
• cannot be determined

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

• (-2, 16)
• (2, 0)
• (2, 4)
• (-2, 4)

What are the green dots called?

• axis of symmetry

• vertex

• parabola

• solutions, zeroes, roots or x-intercepts

Tags

CCSS.HSF-IF.C.7A

Does the following function have a maximum or a minimum

-2x² + 3x - 2

• minimum

• maximum

How many solutions does the function: f(x) = x² +2x + 9 have?

• none

• one

• two