6. What equation is best paired to 2 + = 3 to make an inconsistent system of
linear equations in two variables?
A. – = 4
B. + 2 =
C. = −2 + 1
D. = −2 + 3
7. Which of the following equations can be paired with 6 − 3 = 24 to make a
consistent and dependent system?
A. = 2 − 8
B. = 2 + 8
C. = 6 + 24
D. = 6 − 24
8. What system of linear equations in two variables is the same as {12 − 4 = 4 − 13 = 6 ?
A.{ − 8 = 8 3 − = 18 C. { 8 − = 8 − 3 = 18
B.{ + 8 = 8 3 + = 18 D. { 8 + = −8 + 3 = −18
9. Which of the following is a system of linear equations in two variables?
A. { − = 5 − 4 = 4

B. {3 − 2 = 4 4 = −3

C. { 3 − = 8 −6 + = 6
D. { + 4 = 2 − 2 = −8