Algebra 1 Unit 2 Test

Algebra 1
Name: ______________________________
Unit 2 Test
Date: ________________Block: _________
1. Make a table and graph the function for
the given domain. Then give the range of
the function. TEKS 12.B
2. Use the vertical line test to determine whether or not
.
f(x) = 3x – 5
x
-1
each graph below represents function. Explain why
or why not. TEKS 12.A
A.
B.
.
f(x)
0
1
2
3
Range:_______________
_________________________________________________________________________________________
3. The graph shows a short trip that Martha took to visit her grandmother. Her trip took a total of 8 hours going
to visit and then returning home. TEKS 2.A
b) How long was Martha at Granny’s house?
c) What segment shows Martha traveling the fastest?
Distance (miles)
a) How many hours was Martha traveling to Granny'?
y
120
100
80
60
40
20
0
c
b
d
a
0 1 2 3 4
5 6 7
8 9 x
Time (hours)
_______________________________________________________________________________________
4. A storm is headed through North Texas.
The duration of
the storm is measured in hours while the rainfall is
measured in inches as seen in the table below. Does this
situation represent a discrete or continuous function?
Explain. TEKS 2.A
Duration of the
storm(hrs), x
Amount of
rain(inches), y
1
2
3
0.5
1
1.5
5. Evaluate f (x) = – x + 2 for f( – 5) and f (1).
Write your answer in (𝒙, 𝒇(𝒙)) form.
TEKS 12.A
6.
A math test is made up of 5 questions each worth 2 points. There is no partial credit. Each student receives 25 points
just for taking the test. Write a function in function notation to describe the test score determined by the number of
correct answers. Make a table and graph the function using a reasonable domain and range. TEKS 2.A
B. What is the Domain:
A._________________________
________________________________
x
f(x)
C. What is the Range:
________________________________
D. Is this a discrete or continuous
function?
7. Which statement is true for the function whose graph
is shown? TEKS 2.A
8. The graph of f  x    x 2  4x  1 is below.
Find the value of f  x  when x  0. and CIRCLE it
on the graph below. TEKS 12B
A.
B.
C.
D.
The domain is {x | x = -2, -1, 0, 1, 2}
The domain is {x | x = -4, -2, 0, 2, 4}
The range is all real numbers.
The range is y < 2.
9. Seats in a concert hall are arranged in the pattern shown.
A. Write a formula for this sequence. TEKS 12.D
B. How many seats will be in row 12? ___________________________ TEKS 12.D
C. Each ticket costs $25. If every seat in the first 12 rows is filled, what is the total
revenue from those seats? TEKS 2.A
increase the moose population. Currently there are 51
moose in the park. They hope to increase the
population by 2 moose each year.
A. Assume they are successful. Write a formula for the
population sequence. TEKS 12.C
B. Use the your rule above to predict the population on
the 21st year. TEKS 12.D
12. Use the diagram below to answer the following
questions: TEKS 2.A
A. Is this relation a function?________________
B. What is the domain?_____________________
C. What is the Range?______________________
D. Is this Discrete or Continuous?_____________
11. Which of the following best describes the
graph?
TEKS 2.A
Temp
10. In Yellowston National Park, they are trying to
1hr 3hrs 5hrs
Time
A. As the time increases, the temperature
increases.
B. As the time decreases, the temperature
decreases.
C. As the time increases, the temperature
decreases.
D. The temperature does not depend on the
time.
13. At the Dallas Zoo, employees noticed that
the number of bottles of water sold was related
to the temperature outside. What is the
dependent variable? TEK12.B
A) temperature
C)the employees
B) bottles of water
D)the Zoo
14. Given the function:
TEKS 2.A
𝑓(𝑥) = {(−3, 1), (0, 5), (1, 7)}.
What is f(1)?
A) −3
15. Find the 11th term of the sequence defined by the
given rule: 𝑎1 = 3, 𝑎𝑛 = 𝑎𝑛−1 + 5 TEKS 3.C
B) 7
C) 1
D) not here
16. The cost, C, of getting your car repaired is given
by 𝐶 = 75ℎ + 90, where h is the number of hours in
labor the mechanic works on your car, 75 is the cost per
hour the mechanic charges, and 90 is the cost for the
parts needed to repair your car. Identify the
independent variable. TEK12.B
A) 90
B) C
C) h
D) 75