Quiz about Chapter 6 Review Equations

Question 1

Solve by elimination:
4x+9y=28
-4x-y=-28

Accepted Answer

(7,0)

Answer

(-7,0)

Answer

(6,0)

Answer

(-6,0)

Question 2

Solve by elimination:
3x+7y=23

-3x-7y=-17

Accepted Answer

No solution

Answer

Infinitely Many Solutions

Answer

(-3,7)

Answer

(0,0)

Question 3

Solve by elimination:
-9x-4y=-20

5x+4y=4

Accepted Answer

(4,-4)

Answer

(-4,4)

Answer

(4,4)

Answer

(-4,-4)

Question 4

Solve by elimination:
7x+y=-9

-3x-y=5

Accepted Answer

(-1,-2)

Answer

No solution

Answer

(1,8)

Answer

(-2,-3)

Question 5

Solve by elimination:
4x+4y=4

3x+4y=10

Accepted Answer

(-6,7)

Answer

(7,-6)

Answer

(6,7)

Answer

(7,6)

Question 6

Solve by elimination:
2w - 3y = 8
3w - 7y = 7

Accepted Answer

(7,2)

Answer

(1, 2)

Answer

(2, 7)

Answer

(2, 1)

Question 7

Solve by elimination
-12x-10y= 0
6x+5y= -1

Accepted Answer

no solution

Answer

infinite solutions

Answer

(0,0)

Answer

(2,1)

Question 8

Solve by elimination
4x-6y= -6
-2x-12y= -12

Accepted Answer

(0,1)

Answer

(1,0)

Answer

(1,1)

Answer

(2,1)

Question 9

Solve by elimination
2x+9y= -7
6x-3y= 9

Accepted Answer

(1,-1)

Answer

(-1, -1)

Answer

(2,-1)

Answer

(1,1)

Question 10

Solve the system using Multiplication.
2x + 3y = 12
5x - y = 13

Accepted Answer

x = 3, y = 2

Answer

x = -3, y = -2

Answer

x = 1.5, y = 2

Answer

x = 6, y = 0

Question 11

Solve the system by multiplication.
3x + 2y = 16
7x + y = 19

Accepted Answer

(2,5)

Answer

(-2,5)

Answer

(-2,-5)

Answer

(2,-5)

Question 12

Solve the system by multiplication.
2x + 10y = -20
-x + 4y = 28

Accepted Answer

(-20,2)

Answer

(1,4)

Answer

(2,-20)

Answer

(-2,2)

Question 13

When Joey mowed lawns for 10 hours and walked dogs for 4 hours, he made a total of $62. When he walked dogs for 5 hours and mowed the lawn for 8 hours, he made a total of $55.  How much does Joey charge per hour for each job?

Accepted Answer

Mowing lawns $5
Walking dogs $3

Answer

Mowing lawns $2
Walking dogs $6

Answer

Mowing lawns $3
Walking dogs $5

Answer

Mowing lawns $5.50
Walking dogs $2.50

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