State whether the following statement is true or false:
In a Cartesian plane,the graph of $3x = 15$ is a line parallel to the $x$-axis.

The work done by a body on application of a constant force is the product of the constant force and the distance travelled by the body in the direction of force. Express this in the form of a linear equation in two variables and draw its graph by taking the constant force as $3$ units. What is the work done when the distance travelled is $2$ units? Verify it by plotting the graph.

The linear equation $2x - 5y = 7$ has:

Write the following equation in the standard form $ax + by + c = 0$ and indicate the values of $a, b,$ and $c$ in each case:
$0.2x + 0.5y = 1.2$

Draw the graph of the linear equation $3x + 4y = 6$. At what points does the graph cut the $x$-axis and the $y$-axis?

For the equation $3x - 2y = 12$,express $y$ in terms of $x$.