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Vocabulary
What does it mean?
Crossing the Line
Mountain High, or Valley Low
This Category will result in graph-ic images.
100

Every quadratic equation has a U-shaped graph called this.

What is parabola?

100

The expression −4.9t x^2 + 50tx + 2 represents the height, in meters, of a toy rocket t seconds after launch. This is the initial height of the rocket. 

What is 5 meters?

100

Name the x-intercepts. y=2(x-2)(x+6)

What is (2,0) and (-6,0)?

100

Name the vertex y= (x-3)^2 +4

What is (3,4)?

100

Graph the equation. Must include vertex, and at least one point on each side. y=(x-5)(x-1)

What is graph on board?

200

The highest or lowest point on a parabola.

What is the vertex?

200

Morgan throws a ball up into the air. The height of the ball above the ground, in feet, is modeled by the function

h(t) = −16t^2 + 24t, where t represents the time, in seconds, since the ball was thrown. What is the appropriate domain for this situation?

What is 0 to 1.5?

200

Name the x-intercepts Y=(x)(x-2)

What is (0,0) and (2,0)?

200
y= (x+1)^2 - 8
What is (-1, -8)?
200
Graph the equation. Must include vertex, and at least one point on each side. y = (x+2)(x-2)
What is graph on board?
300

The name of the point where the graph crosses the y-axis

What is the y-intercept?

300

Let h(t) = −16t^2 + 64t + 80 represent the height of an object above the ground after t seconds. This is the number of seconds it takes to achieve its maximum height.

What is 2 seconds?

300

Name the x-intercepts. y=x^2 - 4

What is (-2,0) and (2,0)?

300
y=(x+4)(x-4)
What is (0,-16)?
300
Graph the equation. Must include vertex, and at least one point on each side. y=(x+1)^2 - 2
What is graph on board
400

This is the number before the x^2 that determines whether a parabola opens up or down.

What is the leading coefficient? (also a)

400

An Air Force pilot is flying at a cruising altitude of 9000 feet and is forced to eject from her aircraft. The function

h(t) = −16t^2 + 128t + 9000 models the height, in feet, of the pilot above the ground, where t is the time, in seconds, after she is ejected from the aircraft. Determine and state the vertex of h(t). 

What is 4, 9256

400
Name the x-intercepts y=x^2 - x - 2
What is (-1,0) and (2,0)?
400
Name the vertex x^2 - 4x - 5 = 0
What is (2,-9)?
400
Graph the equation. Must include vertex, and at least one point on each side. y=(x-4)^2 + 3
What is graph on board.
500

The line that runs through the vertex and divides the parabola in half.

What is axis of symmetry?

500

A football player attempts to kick a football over a goal post. The path of the football can be modeled by the

function h(x) = (− 1/225) x^2 +(2/3) x, where x is the horizontal distance from the kick, and h(x) is the height of the football above the ground, when both are measured in feet. What does the vertex of this function mean? If the goal post if 10 feet high, can the football go over the goal?

This is the maximum height of the football, and yes it can.

500

Name the x-intercepts. y= (x-1)^2 + 1

What is None?

500

Name the vertex 2x^2 + 4x - 6 = 0?

What is (-1,-8)?

500

Graph the equation. Must include vertex, and at least one point on each side. -x^2 -6x + 1 = 0

What is graph on board