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6 June, 08:36

Is the system of equations is consistent, consistent and coincident, or inconsistent?

y=-3x+1

2y=-6x+2

Select the correct answer from the drop-down menu.

Consistent

Consistent and Coincident

Inconsistent

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Answers (1)
  1. 6 June, 09:55
    0
    Y = - 3x + 1 ... so we sub in 3x + 1 for y in the other equation

    2y = - 6x + 2

    2 (-3x + 1) = - 6x + 2

    -6x + 2 = - 6x + 2

    -6x + 6x = 2 - 2

    0 = 0

    Consistent and Coincident (its consistent because it has a solution ... it is coincident because both equations are the same line
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