Answers2025-2026_MDCPS_1205070-MJ Grade 8 Pre-Algebra Sem 1-CRUnit Test

Unit Test — Unit test Answers

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21
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Which statement is correct about the system of linear equations graphed below?

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A
The system of equations has one solution because the lines will eventually intersect.
B
The system of equations has one solution because the lines will never intersect.
C
The system of equations does not have one solution because the lines will eventually intersect.
D
The system of equations does not have one solution because the lines will never intersect.
22
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What is the first step in solving the equation ?

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A
Add 5.2 to each side of the equation.
B
Subtract 5.2 from each side of the equation.
C
Multiply each side of the equation by 4.2.
D
Divide each side of the equation by 5.2.
23

Which is the solution to the equation ? Round to the nearest tenth if necessary.

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A
0.9
B
3.4
C
5.1
D
20.2
24

Antoinette solves the linear equation using the steps shown below. Step 1: Step 2: Step 3: Step 4: She checks her solution by substituting –7 for x in the original equation. She determines that her answer is incorrect. Which best describes Antoinette’s error?

Question illustration
A
She distributed incorrectly.
B
She incorrectly combined like terms.
C
She incorrectly applied the addition and subtraction properties of equality.
D
She incorrectly applied the multiplication and division properties of equality.
25

Soro bought a $50.00 bus card at the beginning of the week. Each bus ride costs $2.50. He needs to have at least $20.00 on his card at the end of this month.To determine how many bus rides he can take between now and the end of this month, Soro wrote and solved the following inequality:What error, if any, did Soro make when writing or solving this inequality?

Question illustration
A
Soro’s original inequality should have been .
Option A
B
Soro should have added 2.5 to each side for his first step.
C
Soro should have reversed the inequality symbol when using the division property of inequality.
D
Soro’s work shows no errors.

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