1. Solve the system of two equations using substitution.
y = 2 + 3x.
4x − 3y = −16.
Responses:
A. (2, 10).
B. (2, 8).
C. (−2, 4).
D. (−2, -4).
2. Solve the system of equations.
2x + 6y = −18.
x = 5y − 1.
Responses:
A. (−7.25, −1.25).
B. (−6, −1).
C. (4, 1).
D. (5.25, 1.25).
3. Solve the system of equations.
3x + y = 2.
7x − 4y = 30.
Responses:
A. (2, −2).
B. (1/2, 1/2).
C. (−2, 8).
D. (2, −4).
4. Solve the system of equations.
−4x + 6y = 38.
x − 5y = −20.
Responses:
A. (−35, −3).
B. (35, −3).
C. (5, 3).
D. (−5, 3).
5. How many solution(s) does the system of equations have?
−5x + y = −18.
10x − 2y = 36.
Responses:
A. None.
B. One.
C. Infinite.
D. Two.
Answer the questions by A or B or C or D.
1. B. (2, 8).
2. C. (4, 1).
3. D. (2, -4).
4. B. (35, -3).
5. B. One.