Pre-Algebra Chapter 9

Part 1
Multiple Choice
Record your answers on the answer sheet
provided by your teacher or on a sheet of
paper.
1. When m and n are any two numbers, which of
the following statements is true? (Lesson 1-4)
A m 0 n
B m n n
C n 1 m
D m n n m
8. The relation shown in the table x y
is a function. Find the value
0 2
2. How many units apart are the numbers
of y when x 5. (Lesson 8-2)
1 5
8 and 5 on a number line? (Lesson 2-1)
A 13 B 14
2 8
A 13 B 3
C 17 D 18
3 11
C 1 2 D 3 8 A 3.33 B 5.0 C 6.5 D 7.5
C 14 D 10
9. Which graph shows a line with
3. Find the length of a rectangle having a width
a slope of –2? (Lesson 8-6)
of 9 feet and an area of 54 square feet.
A y
B y
(Lesson 3-7)
A 9 ft B 6 ft
C 10 ft D 18 ft
4. Which of the following results in a negative
O
x O
x
number? (Lessons 4-2 and 4-7)
C y
D y
A (2) 5
B (5) 3
C 5 · (2) 5 D (3) 2 5
5. What is the value of x if 1 2 x 5 6 ?
(Lesson 5-7)
O
x O
x
A 1 4
B 2 5
10. Which point on the number line shown is
closest to 7? (Lesson 9-1)
C 2 3
D 1 3
PQ R S
6. Elisa purchased two books that cost $15.95
and $6.95. The sales tax on the books was 6%.
0 1 2 3 4
If she gave the sales clerk $25, then how much
A point P
B point Q
change did she receive? (Lesson 6-9)
C point R
D point S
A $0.27 B $0.73
11. Triangles ABC and DEF are similar triangles.
C $1.73 D $2.10
What is the measure of side AB? (Lesson 9-5)
7. What is the value of t in 2s t s 3t
D 12
if s 1 A
E
? (Lesson 7-1)
B
2
A 1 8
B 1 4
5
8
C
F
488 Chapter 9 Real Numbers and Right Triangles
Test-Taking Tip
Question 9 You can tell if a line has a negative
or positive slope by looking at its graph. A line with
a negative slope will slant down from left to right.
A line with a positive slope will slant up from left
to right.