SAT Math Multiple Choice Question 352: Answer and Explanation

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Test Information

Question: 352

7.

If the equation of the line shown in the figure above is written in the form which of the following could be the value of m?

  • A. -3
  • B.
  • C.
  • D. 3

Correct Answer: C

Explanation:

C

Difficulty: Medium

Category: Heart of Algebra / Linear Equations

Strategic Advice: The slope-intercept form of a line is y = mx + b. In this question, the graph passes through the origin, so b is 0.

Getting to the Answer: Because b is 0, the equation of this line in slope-intercept form is y = mx, which can be rewritten as . Count the rise and the run from the origin, (0, 0), to the next point, (3, 1), to get a slope of .

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