Quadratics Key Features

What was the maximum height of the ball? Choose the key feature and the answer choice.

• y-intercept, 3 feet

• y-intercept, 0 feet

• x-value of the vertex, 4 feet

• y-value of the vertex, 5 feet

How high was the ball when it was thrown? Choose the key feature and the answer.

• y-intercept, 0 feet

• y-intercept, 3 feet

• x-value of the vertex, 4

• y-value of the vertex 5

What was the height of the water at 3 seconds?

• 9 feet

• 10 feet

• 7 feet

• 5 feet

Approximately how long did it take the water from the fountain to hit the pool below?

• about 1.85 second

• about 2.85 seconds

• about 3.85 seconds

• about 4.85 seconds

What key feature tells the initial height of the roller coaster?

• y-intercept

• x-intercept

• axis of symmetry

• vertex

What key feature tells the lowest point on the roller coaster?

• y-intercept

• vertex

• Axis of Symmetry

• x-intercept

What was the height of the roller coaster at 6 seconds?

• 120 feet

• 50 feet

• 25 feet

• 100 feet

Does this scenario have a max or a min?

• Max

• Min

What is the equation for the axis of symmetry?

• x = b / 2

• x = 2a / -b

• x = 2 / b

• x = -b / 2a

How do I find the y-value of the vertex?

• factor

• x = -b / 2a gives you the y-value of the vertex

• find x = -b / 2a and then plug in for x and solve for y.

• find -b / 2a and then plug in for y and solve for x.