ALGEBRA 1 REVIEW FOR CH 3 TEST
You need to be able to do the following:
1. Interpret graphs
2. Identify the domain and range for a function (given a set or ordered pairs or a graph)
3. Identify if a relation is a function
4. Identify the function families that we have discussed in Ch 3 (linear, quadratic, absolute value,
and exponential) You must know what the equation as well as the graph looks like.
5. Graph linear functions, absolute value functions, and quadratic functions given a specific
domain.
6. Write function rules given certain situations, identifying the independent and dependent
variables
7. Identify the correlation that exists on a scatterplot or given scatterplot data information
THE PROBLEMS BELOW WILL GIVE YOU PRACTICE WITH EACH.
1. What situation could be represented with the graph below?
A The speed increases and then decreases.
BThe speed increases and then remains constant
2.
Identify the domain and range for {(2,5)(-1,3)(2,-6),(-1,-1)}.
3. Identify the domain and range for the graph below.
4.
Function or not? {(2,5),(2,3),(-1,0)}
5.
Function or not?
6.
State the name of each function: y = 2x, y = 3x2, y = |x – 4|, y = 3x – 6
7. Graph y = (x – 3)2 + 2 using the domain values of 1, 2, 3, 4, and 5. PLEASE NOTE: I
COULD ASK YOU TO GRAPH ANY OF THE FUNCTIONS ON THE TEST. I JUST PUT
ONE ON THIS REVIEW.
8. Which is the dependent variable in the following situation?
“Milk sells for $3.39 per gallon.”
9. Which function could represent the following situation: “An internet cafe charges $0.20 per
minute.”
F f(m)  m  0.20 H f(m)  0.20m
G f(m) 
m
20
J f(m)  20m
10.Identify the correlation that exists for each graph and situation below.
.
The correlation between how many points a football team scores and how many games
they win
The correlation between the number of people in an audience and ticket sales