The point where a graph goes through the Y-Axis.
Y-Intercept
What is the y-intercept of the given parabola?
(0,2)
What is the vertex of the given quadratic.
f(x)=-3(x+4)2-7
(-4,-7)
Bella wants to see how long it takes for an egg to hit the ground from the top of the school. Let f(x) be the height of the egg, x seconds after Bella drops the egg. What does the y-intercept represent in this situation?
The height of the school, the height that Bella starts at.
Graph the quadratic f(x)=x2-10x+64.
What is the vertex?
(5,39)
For the function f(x)=3x2+7, what is f(1)?
10
What is the country with the highest population? (Most people)
A function that takes the form ax2+bx+c, where a cannot equal 0.
Quadratic
What is the vertex of the given parabola?
(-3,-7)
What is the "a" value of the given quadratic?
f(x)=4(x+3)2+10
4
Bella wants to see how long it takes for an egg to hit the ground from the top of the school. Let f(x) be the height of the egg, in feet, x seconds after Bella drops the egg. The function representing this f(x)=-2x2+10x+50.
What is the height of the building?
50 feet.
Graph the quadratic f(x)=-4x2-3x-20.
What is the axis of symmetry?
x=-0.375
For the function f(x)=-5x2-8, what is f(2)?
-28
What is the capital of Massachusetts?
Boston
The point (or points) where the parabola goes through the X-Axis.
Is the given parabola facing up or down?
Facing up
What is the axis of symmetry for the given quadratic?
f(x)=(x-7)2+3
x=7
Bella wants to see how long it takes for an egg to hit the ground from the top of the school. Let f(x) be the height of the egg, in feet, x seconds after Bella drops the egg. The function representing this f(x)=-2x2+10x+50.
After five seconds, what is the height of the egg?
50 feet
Graph the quadratic f(x)=x2+7x+154.
What is the y-intercept?
(0,154)
For the function f(x)=-x2+7x+10, what is f(3)
22
Who has won the most NBA titles?
Boston Celtics
The graph of a quadratic function.
What are the zeros (approximately) of the given parabola?
(0,0) and (-6,0)
f(x)=-3(x+2)2
Pointing down
Bella wants to see how long it takes for an egg to hit the ground from the top of the school. Let f(x) be the height of the egg, in feet, x seconds after Bella drops the egg. The function representing this f(x)=-2x2+10x+50.
Graph the function into desmos. What is the vertex of the function?
(2.5,62.5)
Graph the quadratic f(x)=-3x2+16x-44.
Which direction is the graph pointing?
Pointing down.
For the function f(x)=4x2-9x, what is f(5)?
55
Which animal is the most domesticated (had as a pet) in the US?
Dogs
A quadratic written as a(x-h)2+k.
Vertex Form
What is the axis of symmetry for the given parabola?
x=-3
What is the vertex of the given quadratic?
f(x)=x2
(0,0)
Bella wants to see how long it takes for an egg to hit the ground from the top of the school. Let f(x) be the height of the egg, in feet, x seconds after Bella drops the egg. The function representing this f(x)=-2x2+10x+50.
Graph the function into desmos.
How long does it take the egg to hit the ground.
8.09 seconds.
Graph the quadratic f(x)= -7x2+14x+25.
What is the equation written in vertex form?
-7(x-1)2+32
For the function f(x)=-6x2+17x-53, what is f(3)?
-56
What year did the US land on the moon?
1969