Express the following linear equation in the form $ax + by + c = 0$ and indicate the values of $a$,$b$,and $c$: $5 = 2x$.

Find the value of $k$,if $x = 2$,$y = 1$ is a solution of the equation $2x + 3y = k$.

Check whether $(1, 1)$ is a solution of the equation $x - 2y = 4$.

Which one of the following options is true,and why?
$y = 3x + 5$ has
$(i)$ a unique solution,
$(ii)$ only two solutions,
$(iii)$ infinitely many solutions

The taxi fare in a city is as follows:
For the first kilometre,the fare is Rs. $8$ and for the subsequent distance it is Rs. $5$ per $km$. Taking the distance covered as $x \, km$ and total fare as Rs. $y$,write a linear equation for this information,and draw its graph.

Express the following linear equation in the form $ax + by + c = 0$ and indicate the values of $a$,$b$,and $c$: $y - 2 = 0$.