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28 August, 12:45

The graph of the equation y - 1 = - 2 (x - 2) contains which set (s) of ordered pairs? Select all that apply.

A. (0.-2) and (1, 3)

B. (0,5) and (-2,9)

C. (-1.7) and (2.1)

D. (3.-1) and (2-1)

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Answers (1)
  1. 28 August, 13:54
    0
    B and C

    Step-by-step explanation:

    y - 1 = - 2 (x - 2)

    y - 1 = - 2x + 4

    y = - 2x + 4 + 1

    y = - 2x + 5

    now we sub

    A. y = - 2x + 5 ... (0,-2)

    -2 = - 2 (0) + 5

    -2 = 5 ... nope, not this one, no need to go further on this one

    B. y = - 2x + 5 ... (0,5) y = - 2x + 5 ... (-2,9)

    5 = - 2 (0) + 5 9 = - 2 (-2) + 5

    5 = 5 ... yep 9 = 4 + 5

    9 = 9 ... yep

    so B is a correct answer

    C. y = - 2x + 5 ... (-1,7) y = - 2x + 5 ... (2,1)

    7 = - 2 (-1) + 5 1 = - 2 (2) + 5

    7 = 2 + 5 1 = - 4 + 5

    7 = 7 ... yep 1 = 1 ... yep

    so C is a correct answer

    D. y = - 2x + 5 ... (3,-1) y = - 2x + 5 ... (2,-1)

    -1 = - 2 (3) + 5 - 1 = - 2 (2) + 5

    -1 = - 6 + 5 - 1 = - 4 + 5

    -1 = - 1 ... yep - 1 = 1 ... nope

    so ur answers are : B and C
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