Answer :
The equation of line are,
3y = -6x + 9
y = -2x + 3.
Simplify the equation 3y = -6x + 9.
[tex]\begin{gathered} 3y=-6x+9 \\ y=\frac{1}{3}(-6x+9) \\ =-2x+3 \end{gathered}[/tex]So equation 3y = -6x + 9 is equal to y = -2x + 3. The equation has same slope and y intercept. Thus lines lie on each other on the graph and have infinite many solution.
Answer: Infinite solutions