MathAnalytic geometry

Geometric interpretation of linear systems

Identical solutions

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Which of the systems below have at least one dot in their solution that is also a solution to the linear system $\begin{cases} 3x-4y+3z=0\\ -2x+2y-z=0 \end{cases}$ ?

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\begin{cases} x-3y+5z-6=0 \\ -3x+9y+z+1=0\end{cases}

\begin{cases} -x+2y-4z+4=0\\ 5x-3y+z-3=0 \end{cases}

\begin{cases} x-y-2z=0\\ 8x+4y-5z=0 \end{cases}

\begin{cases} -3x+3y-6z+8=0\\ 2x-7y+3z-5=0 \end{cases}

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