More Lessons for Heart of Algebra

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This video is for the redesigned SAT which is for you if you are taking the SAT in March 2016 and beyond.

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Heart of Algebra

Interpret Linear Equations

The mean number of students per classroom, y, at Central High School can be estimated using the equation y = 0.8636x + 27.277, where x represents the number of years since 2004 and x ≤ 10. Which of the following statements is the best interpretation of the number 0.8636 in the context of this problem?

A) The estimated mean number of students per classroom in 2004

B) The estimated mean number of students per classroom in 2014

C) The estimated yearly decrease in the mean number of students per classroom

D) The estimated yearly increase in the mean number of students per classroom

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