Solving Linear-Quadratic Systems by Substitution

Two pirate ships are sailing on the same sea. Using longitude and latitude, their trajectories can be mapped to a grid, where $x$ and $y$ are the ship's coordinates. Ship 1's trajectory is the line $y=x^2+2x+1$, while ship 2's trajectory is $y=6x+6$. $\\$ The ships meet once at the equator, where they enter into a battle, firing cannons and blowing holes in each other's ships, yet narrowly escape one another. Approximately where in the sea could they have their next encounter?