Line of Symmetry
Important Points
Increasing/Decreasing & Opens
Domain/Range
Positive/Negative
100

What is the definition of the line of symmetry

It is a line where it cuts the parabola in half

100

what is f(-5) 

f(-5)=2

100

How does the graph open 

up

100

T or F, the domain of quadratics is always all real numbers 

True

100

What part of the graph are we looking at when we are looking for the positive?

above the x- axis
200

Draw the line of symmetry

200

What is the vertex

(-3,-2)

200

Where is the graph increasing


(1, infinity)

200

What do  +infty or  

 - infty  get

parenthesis ( and )
200

Where is the graph positive

(-3,1)

300

What is the equation of the line of symmetry

x=0

300

what is the vertex 

 (-4,3)

300

Tell me where the graph is increasing and decreasing 


Increase: (- infinity, 3)


Decrease: (3, infinity)

300

What is the domain of the graph 


(-infty, infty)

300

Where is the graph negative 

(0,4)

400

Draw the line of symmetry

400

What are the x -intercepts and the y -intercept 


x-intercepts: (-1,0) and (3,0)

y-intercept: (0,-3)

400

Where is the graph decreasing.


( -infinity, 1)

400

What do we think of when we consider the range, and what does the  number always get

an elevator, a bracket [ or ]

400

Where is the graph positive

(-infinity, -2) and (4, infinity)

500

Draw the line of symmetry and tell me the line of symmetry

x=-3

500

Does this graph have a minimum or maximum. What is it?


Minimum (1,-4)

500

Provide a description on how you know when the graph is decreasing

thinking of a roller coaster, when the ride is going down the hill

500

What is the range of the graph 

(-infty, 4]

500

Where is the graph negative

(-infinity,-3) and (1, infinity)

M
e
n
u