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Linear Equations in One Variable

SAT Math· difficulty 3/5

A line is parallel to y=−3x+7y = -3x + 7 and passes through (2,1)(2, 1). Which equation represents this line?

  • A

    y=−3x+7y = -3x + 7

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  • B

    y=−3x+5y = -3x + 5

  • C

    y=3x−5y = 3x - 5

  • D

    y=−3x−5y = -3x - 5

Explanation

Parallel lines share slope −3-3. Substitute (2,1)(2, 1): 1=−3(2)+b1 = -3(2) + b, so b=7b = 7. The equation is y=−3x+7y = -3x + 7.

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