1. f(x) g(x) x x (-8,5) (8,4) (8,3) (3,0) (-4,-1) (-7,-1) (3,-2) (0,-3)
Reading Graphs
f(x)
g(x)
(-8,5)
(8,4)
(8,3) x x
(3,0)
(-4,-1)
(-7,-1)
(3,-2)
(0,-3)
(-4,-5)
Example (Reading graphs). Use the graphs above to answer the questions.
Find f(-4).
Find g(-4).
Find (f+g)(-4).
Find f(-8).
Find g(-8).
Find (f+g)(-8).
What is the domain of f?
What is the domain of g?
What is the range of f?
What is the range of g?

2. f(x) x (0,5) (-7,-2) (-4,0) (-3,3) (-1,3) (-9,0) (2,0) (5,-6) (8,0)
Reading Graphs
(3,-3)
(7,-3)
Example (Reading graphs). For the function graphed above:
Find f(-7).
For what values of x is f(x)=0?
For what values of x is f(x)<0?
For what values of x is f(x)>0?
What is the domain of f?
What is the range of f?
For what values of x does f(x)=-3?
On what intervals is the function increasing?
On what intervals is the function decreasing?
On what intervals is the function constant?
At what number(s) does f have a local maximum?
At what number(s) does f have a local minimum?