Question 19A triangle with vertices at $A=(1,3),$ $B=(5,1),$ and $C=(4,4)$ is plotted on a $6\times5$ grid. What fraction of the grid is covered by the triangle? $ \dfrac{1}{6} $$ \dfrac{1}{5} $$ \dfrac{1}{4} $$ \dfrac{1}{3} $$ \dfrac{1}{2}$
