AnswersMHS - Algebra 1 - S1 - CRUnit Test

Unit Test — Unit test Answers

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What is the solution to this system of linear equations?2x + y = 13x – y = –6

A
(–1, 3)
B
(1, –1)
C
(2, 3)
D
(5, 0)
22
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Karina uses the system of equations below to compare the monthly utility costs in July and December for electricity, x, and natural gas, y. 750x + 17y = 141.61300x + 30y = 75.90

A
The cost of natural gas is $0.17 per unit.
B
The cost of natural gas is $0.20 per unit.
C
The cost of natural gas is $0.72 per unit.
D
The cost of natural gas is $0.83 per unit.
23

How many solutions does this linear system have?y = 2x – 5 –8x – 4y = –20

A
one solution: (–2.5, 0)
B
one solution: (2.5, 0)
C
no solution
D
infinite number of solutions
24

Which value, when placed in the box, would result in a system of equations with infinitely many solutions?y = -2x + 46x + 3y =

Question illustration
A
-12
B
-4
C
4
D
12
25

The tables represent two linear functions in a system.What is the solution to this system?

Question illustration
A
(1, 0)
B
(1, 6)
C
(8, 26)
D
(8, –22)

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