Algebra I 8-1 to 8-3

What causes the graph of y = x² to open downward?

• multiply the x² by a fraction
• multiply the x² by a decimal
• multiply the x² by a negative number
• multiply the x² by a number greater than 1

What's the vertex of the parabola?

• (-2,4)
• (-1,1)
• (0,0)
• (2,4)

The vertex of the parabola is the...

• maximum 
• minimum
• axis of symmetry
• line of symmetry

The line of symmetry for this parabola is...

• x = 0
• y = 0
• x = 1
• y = 1

Name the y-intercept.

• (-4,4)
• (0,4)
• (-2,0)
• (0,0)

The axis of symmetry is a line that goes through the...

• y-intercept
• any random point
• vertex
•  x-axis or y-axis

Is this a max or min?

• max
• min

If the vertex of a parabola is (3,5), what is the axis of symmetry? 

• y=5
• x=5
• x=3
• There is not enough information provided. 

Identify the axis of symmetry. 

• x=-1
• y=-1
• x=4
• y=4

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