Vocabulary
Every quadratic equation has a U-shaped graph called this.
What is parabola?
Name the vertex y= (x-3)2 +4
What is (3,4)?
Graph the equation. Must include vertex, and at least one point on each side. y=(x-5)(x-1)
What is graph on board?
The path of a ball is represented by: h(t) = -16t2 + 26t + 5. Name the height at 1 second.
What is 15 feet?
Name the x-intercepts Y=(x)(x-2)
What is (0,0) and (2,0)?
y= (x+1)2 - 8
What is (-1, -8)?
A rocket is launched from a height of 10 feet with an initial velocity of 150 feet per second. Write a function for this situation.
What is h(t) = -16t2 + 150t + 10?
When a quadratic equation is written in this form y = ax2 +bx + c
What is the standard form?
Name the y-intercept. y = 2x2 - 4x + 8
What is (0, 8)?
Graph the equation. Must include vertex, and at least one point on each side. y=(x+1)2 - 2
What is graph on board
A football is punted and represented by: h(t) = -16t2 + 80t + 2. At what time is the football at its max height?
What is 2.5 seconds?
This is the number before the x2 that determines whether a parabola opens up or down and its width.
What is the leading coefficient? Or
What is the a-value?
Name the y-intercept y = (x + 2)2 + 3
What is (0, 7)?
Name the vertex y = x2 - 4x - 5
What is (2,-9)?
Graph the equation. Must include vertex, and at least one point on each side. y=(x-4)2 + 3
What is graph on board.
A rock is tossed upwards and its path is represented by: h(t) = -16t2 + 64t + 50. What is the rock's max height?
What is 114 feet?
The line that runs through the vertex and divides the parabola in half.
What is axis of symmetry?
Name the x-intercept(s). y= (x-1)2 + 1
What is None?
Name the vertex y = 2x2 + 4x - 6.
What is (-1,-8)?
Graph the equation. Must include vertex, and at least one point on each side. -x2 - 6x + 1 = 0
What is graph on board
A ball is kicked from the ground and represented by h(t) = -16t2 + 64t. When will the ball hit the ground?
What is 4 seconds?