Express the equation $2x + 3y = 12$ in the standard form $ax + by + c = 0$ and find the value of $a + b + c$.

Write the following as an equation in two variables:
$3y = -11$

Determine the point on the graph of the linear equation $2x + 5y = 19$,whose ordinate is $1 \frac{1}{2}$ times its abscissa.

The equation $2x + 5y = 7$ has a unique solution,if $x, y$ are:

If $(2,0)$ is a solution of the linear equation $2x + 3y = k,$ then the value of $k$ is

Draw the graph of each of the equations given below. Also,find the coordinates of the points where the graph intersects the coordinate axes:
$1. 3x + 5y = 15$
$2. 5x - 2y = 10$
$3. 4x + 3y = -12$
$4. 3x - 7y = 21$
$5. x - y = 0$
$6. 2x - 3y = 0$
$7. x - y = -5$
$8. 5x - 3y = 15$