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Systems of Two Linear Equations in Two Variables

SAT Math· difficulty 4/5

The line y=mx+2y = mx + 2 and y=4x+by = 4x + b are the same line. What is m+bm + b?

  • A

    6

    check_circle
  • B

    0

  • C

    4

  • D

    2

Explanation

For same line: m=4m = 4, b=2b = 2. So m+b=6m + b = 6.

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