Question

Given the information on the graph, answer the following questions:

Explain why f represents the graph of a function.
Use the graph to find a reasonable estimate of f (- 2).
What is the domain of f?
What is the range of f?

Answer 1

for every value of x there is a unique value of y
reading off the graph
f(-2) = 2

the domain is all possible the values of x
range is all possible values of y

Answer 2

does the graph stop at end points of the line or does it continue on?

Answer 3

it stops at the points

Answer 4

ok
then domain is [-2,2]
range is [-1,2]

Answer 5

Thank you for your help. Graphs are still a little hard for me to get.

Answer 6

yw