8-2 Solve It!
Cost of Class Party
Cost per student ($)
For a class party, the students will
share the cost for the hall rental. Each
student will also have to pay $8 for food.
The cost of the hall rental is already
graphed. What effect does the food cost
have on the graph? Explain your reasoning..
8
7
6
5
4
3
2
1
y
O
(40, 6)
(60, 4)
(80, 3)
(100, 2.4)
20
40
60
80
x
100
Number of students
8-2 Lesson Quiz
1
1. What transformation changes the graph of y 5 x into the
graph of y 5 22
x ?
1
2. What is the graph of y 5 x 1 3 1 1? Identify the domain
and range, the x- and y-intercepts, and the asymptotes of
the graph.
3. Do you UNDERSTAND? A local theater will hold an after-prom
movie. The theater seats 300 people, and the total cost is $400.
If ten parents go as chaperones, model the cost per student
C as a function of the number of attendees n. How many
students must attend the movie for the cost to be no more
than $3.25 per student? Assume the chaperones do not pay.
Answers
Solve It!
Lesson Quiz
It will raise the graph 8 units up.
1. The graph is reflected in the
x-axis and stretched by a
factor of 2.
y
2.
4
2
4
2 O
x
domain: all real numbers
except x 5 23; range: all
real numbers except y 5 1;
x-intercept: (24, 0);
y-intercept: (0, 43); vertical
asymptote: x 5 23,
horizontal asymptote: y 5 1
3. C 5 n 400
2 10 ; at least 124
students
2
Prentice Hall Algebra 2 • Solve It/Lesson Quiz on Transparencies
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