8.3-8.5 QUIZ Graph Quadratics

Is this a max or min?

• max
• min
• cannot be determined

Tags

CCSS.8.F.A.1

CCSS.8.F.B.4

CCSS.8.F.B.5

What are the x- intercepts?

• x = 0 and x = -4

• x = 0 and x = 4

• y = 0

• x = 2

Which answer choice describes  y = -3x² +7x - 2 accurately?

• opens up with a maximum
• opens up with a minimum
• opens down with a maximum
• opens down with a minimum 

Tags

CCSS.HSF-IF.C.7A

y =2x²-6x+1 is in what form?

• Vertex Form

• Factored form

• Standard Form

• Cannot be determined

How many solutions does this graph have?

• one

• two

• no solutions

• cannot be determined

Identify the vertex and whether the graph opens up or down.

• (-1, 4); opens up

• (-1, 4); opens down

• (1, 4); opens up

• (1, 4); opens down

Write a quadratic function in vertex form given the vertex and another point.

Vertex form:  $y=a(x-h)^2+k$  

•  $f\left(x\right)=(x+1)^2-4$  

•  $f\left(x\right)=(x-1)^2-4$  

•  $f\left(x\right)=(x+1)(x-3)$  

•  $f\left(x\right)=x^2+2x-3$  

Write a quadratic function in intercept form.

y = a(x - r1)(x - r2)

• $f\left(x\right)=-(x-6)(x-8)$

• $f\left(x\right)=-(x+6)(x+8)$

• $f\left(x\right)=(x+6)(x+8)$

• $f\left(x\right)=(x+6)(x-8)$

What is the significance of the ordered pair (0, -2) to the graph?

• It is the vertex

• It is an x-intercept

• It is the y-intercept

• It is the axis of symmetry

Tags

CCSS.HSF-IF.C.7A

What is the significance of the ordered pair (2, -4) to the graph?

• It is the vertex

• It is an x-intercept

• It is the y-intercept

• It is the axis of symmetry

Tags

CCSS.HSF.IF.B.4

CCSS.HSF.IF.C.7