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8 October, 18:24

Which ordered pair is a solution of the equation y=-2x+5

A) only (2,-9)

B) only (-2,9)

C) Both (2,-9) and (-2,9)

D) Neither

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Answers (1)
  1. 8 October, 18:32
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    A) y=-2x+5 (2,-9) Use substitution method

    -9 = - 2 (2) + 9

    -9 = - 4+9

    -9 = 5

    B) y=-2x+5 (-2,9)

    9 = - 2 (-2) + 5

    9 = 4+5

    9 = 9

    Answer : B) only (-2,9)
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