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Systems of Two Linear Equations in Two Variables

SAT Math· difficulty 3/5

The graphs of y=−2x+5y = -2x + 5 and y=−2x+1y = -2x + 1 are:

  • A

    Perpendicular

  • B

    Intersecting at a single point

  • C

    Identical

  • D

    Parallel

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Explanation

Same slope −2-2, different intercepts → parallel.

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