SAT Math Multiple Choice Question 617: Answer and Explanation

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Question: 617

2. 3x+ 4y = 18

Images

Which of the following ordered pairs (x, y) is a solution of the system of equations above?

  • A. (2, 3)
  • B. (3, 2.25)
  • C. (4, 1.5)
  • D. (4, 6)

Correct Answer: A

Explanation:

A

Algebra (linear systems) EASY

To determine which ordered pair is a solution to the system, just "plug in" the values for x and y and choose the one that satisfies both equations. Notice that x = 2 and

y = 3 is a solution because 3(2) + 4(3) = 18, and Images.

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