The coordinates of $A,B,C$ are $\left(6,3\right),\left(-3,5\right),\left(4,-2\right)$ , respectively, and $P$ is any point $\left(x,y\right)$ . Show that the ratio of the area of $PBC$ to that of $ABC$ is $\frac{\left|x+y-2\right|}{7}\dot{}$

Views: 1,013 students