SAT Math Multiple Choice Question 322: Answer and Explanation

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Question: 322


If (A, B) is the solution to the system of equations shown in the graph above, what is the value of A + B?

  • A. –18
  • B. –9
  • C. 1
  • D. 5.5

Correct Answer: B



Difficulty: Medium

Category: Heart of Algebra / Systems of Linear Equations

Strategic Advice: The solution to a system of linear equations shown graphically is the point where the lines intersect. Read the axis labels carefully. Each grid-line represents

Getting to the Answer: The two lines intersect at the point (-5, -4), so A + B = -5 + (-4) = -9.

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