SAT Math Multiple Choice Question 928: Answer and Explanation
A system of three equations and their graphs are shown above. How many solutions doesthe system of equations have?
- A. None
- B. One
- C. Two
- D. Three
Correct Answer: B
Category: Passport to Advanced Math / Quadratics
Strategic Advice: Graphically speaking, the solution to a system of equations is the point or points where ALL the graphs intersect.
Getting to the Answer: There is only one point on the graph where all three equations intersect, (1, 4). Therefore, (B) is the correct answer.