With reference to the conventional Cartesian $(x,y)$ coordinate system, the vertices of a triangle have the following coordinates: $(x_1, y_1) = (1,0)$; $(x_2,y_2) = (2,2)$; and $(x_3,y_3)=(4,3)$. The area of the triangle is equal to

1. $\dfrac{3}{2} \\$
2. $\dfrac{3}{4} \\$
3. $\dfrac{4}{5} \\$
4. $\dfrac{5}{2}$