Mathematics

Solve the simultaneous equation:
x^2 + y^2 = 13 and x + 3y = -3

asked by Grace
  1. x = -3 (y + 1)

    x^2 = 9 (y^2 + 2y + 1)

    substitute and solve for y

    there will probably be two solutions
    ... the intersection(s) of a circle and a line

    posted by Scott

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