Triangle JKL, with vertices J(2,3), K(7,4), and L(3,9), is drawn inside a rectangle, as
shown below.
What is the area, in square units, of triangle JKL?
![Triangle JKL with vertices J23 K74 and L39 is drawn inside a rectangle as shown below What is the area in square units of triangle JKL class=](https://us-static.z-dn.net/files/d6d/77f6bc3d46371d38f1a096eee47da01a.png)