Math - number of solution

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Determine the number of solutions for the system without solving.
3x+12y=-27
4x+2y=34

  • Math - number of solution -

    Transform each equation to the form
    y=mx+b
    where m=slope and b=y-intercept.

    If the slopes (m) are distinct (different), then there is one solution.

    If the slopes are identical, then check the y-intercepts. If the y-intercepts are different, there is no solution (lines are parallel and distinct).

    If the slopes are identical and the y-intercepts are the same, then there are infinite solutions (lines are coincident).

    In this case, there is one solution.

  • Math - number of solution -

    How many solutions are there to the following system of equations?

    3x-9y=0
    -x+3y=-3

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