SAT Math Multiple Choice Question 541: Answer and Explanation
1. What is the y-coordinate of the solution to the system of equations shown above?
- A. –7
- B. –3
- C. 0
- D. 7
Correct Answer: D
Category: Heart of Algebra / Systems of Linear Equations
Strategic Advice: A quick examination of the equations in the system will tell you which strategy to use to solve it. Because 4x and –4x are opposites of one another, the system is already perfectly set up to solve by elimination (combining the two equations by adding them).
Getting to the Answer: