Beginning Algebra, 11th Edition

CHAPTER 4 Test^291

11.

-

2

3

x+

1

6

y= 11

6

5

x-

1

3

y=- 20

43. 44. 45.

x+ 2 y 74

y... 2 x

x-yÚ 2

x+y 65

0.3x+0.2y=1.4

0.4x-0.9y=0.7

46.The perimeter of an isosceles triangle measures 29 in. One side of

the triangle is 5 in. longer than each of the two equal sides. Find the

lengths of the sides of the triangle.

47.In 2007, a total of 7.5 million people visited the Statue of Liberty and the National

World War II Memorial, two popular tourist attractions. The Statue of Liberty had

0.7 million fewer visitors than the National World War II Memorial. How many visitors

did each of these attractions have? (Source:National Park Service.)

48.Two cars leave from the same place and travel in opposite directions. One car travels

30 mph faster than the other. After hr, they are 265 mi apart. What are the rates of

the cars?

(^2 12)
y = x + 5
y
xx
265 mi

40. 41. 42.

4 x- 5 y= 8

3 x+ 4 y= 6

2 y- 2 x=- 12

x=y+ 6

x

2

+

y

12

=

8

3

2 x

3

+

y

4

=

14

3

1.Decide whether each ordered pair is a solution of the system.

(a) (b) (c)

2.Solve the system by graphing.

Solve each system by substitution.

x+ 2 y= 6

• 2 x+ y=- 7

1 1, - 52 1 1, 10 2 1 - 4, 5 2

2 x+y=- 3

x-y=- 9

TEST

CHAPTER 4

View the complete solutions to
all Chapter Test exercises on
the Video Resources on DVD.

Step-by-step test solutions are found on the Chapter Test Prep Videos

available via the Video Resources on DVD, in , or on

(search “LialBeginningAlgebra”).

CHAPTER

VIDEOS

3. 4.

x+ y= 0

4 x+ 3 y=- 35

x=y+ 7

2 x+y=- 4

Solve each system by elimination.

5. 
   
   
   
   6. 
      
      
      
      7. 2 x+ 5 y= 13
      
      
      
      
   
   
   
   

3 x+ 4 y= 9

5 x+ 4 y= 7

4 x+ 2 y= 2

3 x+y= 21

2 x-y= 4

8. 9.

• 2 x+ 3 y= 0

6 x- 5 y= 0

• 8 x- 10 y= 6

4 x+ 5 y= 2

10. 4 y=- 3 x+ 5
    6 x=- 8 y+ 10

Solve each system by any method.