SAT Math Multiple Choice Question 927: Answer and Explanation

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Test Information

Question: 927

11.

If (x1, y1) and (x2, y2) are solutions to the system of equations shown on the graph, what is the value ofx1 + x2?

  • A. –3
  • B. 0
  • C. 2
  • D. 5

Correct Answer: D

Explanation:

D

Difficulty: Easy

Category: Passport to Advanced Math / Quadratics

Strategic Advice: The solutions to a system of equations presented graphically are the points where the graphs of the equations intersect.

Getting to the Answer: Read the graph carefully to find the points of intersection: (-2, 3) and (7, -1). The question asks for the sum of the x-coordinates of these points, and -2 + 7 = 5, so (D) is correct.

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