The graph of 2x + 1 = 0 and 3y - 9 = 0 intersect at the point?

$$\eqalign{ & 2x + 1 = 0 \cr & \Leftrightarrow x = \frac{{ - 1}}{2}{\text{ }} \cr & 3y - 9 = 0 \cr & \Leftrightarrow y = \frac{9}{3} = 3 \cr & \therefore \left( {x,y} \right) = \left( {\frac{{ - 1}}{2},3} \right) \cr & {\text{Point of intersection}} \cr} $$