Vocabulary
Every quadratic equation has a U-shaped graph called this.
What is parabola?
x2 - 3x + 1 = 0 is in ___________ form.
What is standard form?
Name the vertex y= (x-3)2 +4
What is (3, 4)?
The solutions to the equation x2 = 9.
What are x=-3 and x=3?
y = 2 (x - 5)² + 6 is in __________ form.
What is Vertex form?
y= (x+1)2 - 8
What is (-1, -8)?
A rock is thrown upward. Its height can be modeled by the function h(t) = -16t2 + 16t + 5. The initial velocity of the rock is _______ feet per second.
What is 16?
When a quadratic equation is written in this form y = ax2 +bx + c
What is the standard form?
y = 2(x-1)(x+7) is in __________ form.
What is factored form?
Name the x-intercepts. y=x2 - 4
What is (-2,0) and (2,0)?
A rock is thrown upward with an initial velocity of 16 ft/s from an initial height of 5 ft. Its height can be modeled by the function h(t) = -16t2 + 16t + 5.
The maximum height the rock will reach is __________ feet.
What is 9?
This is the number before the x2 that determines whether a parabola opens up or down.
What is the leading coefficient?
Convert the equation to factored form.
y = x2 - x - 42
What is y = (x + 6)(x - 7) ?
Name the x-intercepts y=x2 - x - 2
What is (-1,0) and (2,0)?
Name the vertex x2 - 4x - 5 = 0
What is (2,-9)?
Janet is adding fencing for a dog pen. One side of the pen is against the fencing for the yard, so she only needs to enclose 3 sides of the the rectangle. Janet will use 150 ft of fencing for the enclosure. Let x represent the length of the sides that touch the existing fence. Name the expression that represents the length of the 3rd side.
What is 150-2x?
Convert to standard form.
y = 2(x + 5 )2 + 11
What is 2x2 + 20x + 61?
Name the x-intercepts. y= (x-1)2 + 1
What is None?
Daily Double. (It's worth 1,000 points.)
Name the vertex 2x2 + 4x - 6 = 0?
What is (-1,-8)?
What is the average rate of change from x=2 to x=6.
x2 + 2x + 4
What is 10?