Algebra 2 8.3Q

Find the axis of symmetry for

f(x) = x² − 8x + 15.

• x = −4

• x = 4

• y = 4

• y = −4

Find the vertex

y = x² + 16x + 71

• (−8, 7)

• (−8, 3)

• (8, 10)

• (16, −2)

What is the y-intercept of the function?

y = 2x² + 3x + 5

• 2

• 3

• 5

• Cannot be determined

Determine if the function graphed has a maximum or a minimum value and identify that value.

• maximum at -1

• minimum at -1

• maximum at 4

• minimum at 4

What is the arrow pointing at? How can you use this value to determine the minimum/maximum values?

• The arrow is pointing at the y-intercept. The y value of this point is equivalent to the maximum/minimum 
• The arrow is pointing at the vertex. The x value of this point is equivalent to the maximum/minimum
• The arrow is pointing at the solution. The y value of this point is equivalent to the maximum and the x value is equivalent to the minimum
• The arrow is pointing at the vertex. The y value is equivalent to the minimum/maximum

What's the axis of symmetry of  $y=3x^2-6x+4$   ?

•  $x=1$  

•  $x=-6$  

•  $x=2$  

•  $x=-1$  

Does the equation have a maximum or minimum? $y=2x^2+7x+5$  

• maximum

• minimum

If the   $a$  value in a quadratic function is positive, in which direction does the graph of the function open?

• up

• down

• left

• right

If the  $a$  value in a quadratic function is negative, in which direction does the graph of the function open?

• up

• down

• left

• right

Does this graph have a maximum or minimum?

• Minimum
• Maximum