SAT Math Multiple Choice Practice Question 491: Answer and Explanation

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Question: 491


Which of the following could be the equation of the line represented in the graph above?

A. y = 2x + 4
B. y = 2x – 4
C. y = –2x – 1
D. y = –2x – 4
E. y = –2x + 4

Correct Answer: E


E Remember that the equation of a line is y = mx + b, where m is the slope and b is the y-intercept. POE! The line in the graph has negative slope, so you can eliminate A and B, and it has a positive y-intercept, so you can eliminate C and D.

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