Modded SAT Question Bank
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Test
Math
Domain
Algebra
Skill
Systems of two linear equations in two variables
Difficulty
Easy
ID: aff28230
Modded SAT Question Bank by Abdullah Mallik

x=10

y=x+21

The solution to the given system of equations is x,y. What is the value of y?

  1. 2.1

  2. 10

  3. 21

  4. 31

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Correct Answer: D
Rationale

Choice D is correct. It's given by the first equation in the given system of equations that x=10. Substituting 10 for x in the second equation in the given system yields y=10+21, or y=31. Therefore, the value of y is 31.

Choice A is incorrect and may result from conceptual or calculation errors.

Choice B is incorrect. This is the value of x, not the value of y.

Choice C is incorrect and may result from conceptual or calculation errors.

Question Difficulty: Easy
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