Pre-Calculus

posted by Alexis

Write Parametric equations of -3x+1/2y=2

  1. Reiny

    we know x =rcosØ and y = rsinØ

    -3rcosØ + (1/2)rsinØ = 2
    -6rcosØ + rsinØ = 2
    r(sinØ - 6cosØ) = 2
    or
    r = 2/(sinØ - 6cosØ)

    looks good:
    http://www.wolframalpha.com/input/?i=polar+r+%3D+2%2F%28sinx+-+6cosx%29

  2. Steve

    Reiny gave you good polar coordinates, but if all you want is parametric equations, try

    x = t/3
    y = 1 + t/2

    or

    x = -(2+t)/3
    y = -2t

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