Writing Equations
Definitions
Describing Parabolas
Name the Function
Review
100
What is the correct equation?
y = x2
100
What is the axis of symmetry?
A line the cuts a parabola into two equal halves!
100
Find the y intercept of x2+2x+3
y intercept = (0,3)
100
This table shows the average cost for a Packer game during the last five seasons. Is this Linear, Exponential or Quadratic?
This is linear
100
Name a real world example of a parabola!!
i.e. a bridge, a banana, an arch, etc....
200
What is the equation of a parabola x2 translated up three units?
y= x2+3
200
What is vertical shrink and vertical stretch?
Vertical Shrink makes the parabola wider i.e. a=1/2
Vertical Shrink makes the parabola narrower i.e. a=3
200
Does the graph of x2 + 2x+3 have a max or min??
MIN!!!
200
What is the coordinate of the turning point?
(-3,1)
200
FOIL (x+9)(x+7)
x2+16x+63
300
What is the equation of this quadratic translated right 3 units. y=x2
y = (x-3)2
300
What is a Horizontal Translation and a Vertical Translation?
Horizontal Translation is when the parabola moves left or right on the x axis
Vertical Translation is when the parabola moves up or down y axis
300
Find the the equation for reflection of the parabola y= x2 + 2x+3???
y= -x2 + 2x+3
300
Are the following graphs linear, cicle or quadratic?
A: y=6-4x
B: y=5+3x-3x2
C: y=(x-3)2+(y+2)2
A: Linear
B: Quadratic
C:Circle
300
SIMPLIFY: (2x3y)(3x4yz)
6x7y2z
400
Make x2 vertically stretch by a factor of 3 and graph it.
y = 3x2
400
What is the vertical line test? Show an example!!!
It is a way to test if a graph is a function or not
400
What do you call a deer without eyes?
No eye deer!!! hahaha...
400
From the points below, determine if the graph is quadratic, exponential or linear!!!!
(-7, -11) (3, 9) (0, 3) (2, 7) (-3,-3)
It is Linear!
400
Factor x2-3x-40
(x - 8)(x+5)
500
Translate x2 up 3 units and 5 units to the right. Write the new equation.
y = (x-5)2+3
500
What is a Quadratic Function? What degree does a parabola have?
Any polynomial with a degree of 2 or higher, like x2 or x3.
A parabola has a degree of two or higher.
500
Find the vertex of the the parabola y= x2 + 2x+3
Vertex = (-1, 2)
500
What do you call a deer that has no eyes and no legs?
Still no eye deer!!!hahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahaha
500
What do you call a fish without eyes?
Fsh