Digital PSAT Math Practice Question 9: Answer and Explanation
Question: 9
What is the value of y in the system of equations below?
- A. 2
- B.
- C.
- D. -4
Correct Answer: C
Explanation:
(C) Solve this using elimination by taking the first equation and multiplying it by 
:
Subtract the two so we can easily find y:
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