Algebra II Lessons 3.1-3.2 Review 2021-22

Does y = -4x² have a maximum or minimum value?

• maximum
• minimum

What's the axis of symmetry of y=3x²-6x+4

• x=1
• x=-6
• x=2
• x=-1

Does the equation open or or down? 
Y = -3x² +7x - 2

• up
• down

Does the equation have a max or min?
y = 2x² + 7x + 5

• max
• min

15f) Determine the line of symmetry.  y = x²+16x+64

• x=4
• x=2
• x=-8
• x=64

What is the axis of symmetry?

• the slope of the graph
• the dividing line for a parabola
• a way to spin my pencil
• the x-axis

What is the equation of the axis of symmetry?

• y = 4

• y = -4

• x = 4

• x = -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

An object in launched directly upward at 64 feet per second (ft/s) from a platform 80 feet high. Its height is represented by the equation 
s(t) = –16t² + 64t + 80.
What will be the object's maximum height? 

• 2 ft
• 80 ft
• 144 ft
• 64 ft

A lizard is jumping across the water in search of food. The equation h = -12t² + 6t models the lizard's height in feet above the water t seconds after he jumps. How long after jumping is he back on the water?

• 0.1 seconds

• 0.25 seconds

• 0.50 seconds

• 0.75 seconds

• 1 second