Find graphically the vertices of a quadrilateral bounded by the lines whose equations are: 

$y=0, y=2, 2x+y=10$ and $y=x$.

Also, find its area.

Solve the following system of equations:

$x+y=3$

$4x-3y=26$

Solve the following system of equations:

$2x+3y=0$

$3x+4y=5$

Solve the following system of equations:

$2x-3y=13$

$7x-2y=20$ 

Solve the following system of equations:

$2x+y=7$

$4x-3y+1=0$

Solve the following system of equations:

$\frac{x}{2}-\frac{y}{9}=6$

$\frac{x}{7}+\frac{y}{3}=5$

Solve the following system of equations:

$\frac{x}{3}-\frac{y}{4}=11$

$\frac{5x}{6}+\frac{y}{3}=-7$

Solve the following system of equations:

$2x-\frac{3y}{4}=3$

$5x=2y+7$

Solve the following system of equations:

$2x+5y=\frac{8}{3}$

$3x-2y=\frac{5}{6}$