Suggested Review:
Graphs of Functions
from the
Algebra II curriculum
You must be able to read a wide variety of information from the
graph of a function:
EXAMPLE:
The graph of a function $\,f\,$ is given below.
$f(0) = 10$
$f(1) = 0$
$f(2.03) = -10$
$\text{dom}(f) = [-2,3)$
$\text{ran}(f) = [-10,20)$
$f$ increases on $[-2,0)$
$f$ decreases on $[0,2]$
$f$ is constant on $[2,3)$
$\{x\ |\ f(x) = 10\} = \{-2,0\}$
$\{t\ |\ f(t) \gt 0\} = [-2,1)$
How can we tell this is the graph of a function?
It passes the vertical line test.
On this exercise, you will not key in your answer.
However, you can check to see if your answer is correct.
Be careful! The number labels are a bit below and to the right of the tick marks!