The Coordinate Plane · Hard problem

Two number patterns make points. The $x$-numbers start at $2$ and add $4$ each time. The $y$-numbers start at $30$ and subtract $3$ each time. So the first points are $(2, 30)$, $(6, 27)$, $(10, 24)$. Which point in the pattern has its two coordinates equal? Write it as (x, y).