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

Express the following linear equation in the form $ax + by + c = 0$ and indicate the values of $a, b$ and $c$ in each case:
$5x + 3y = 45$

The point of the form $(a, a)$ always lies on:

The autorickshaw fare in a city is charged $Rs. 10$ for the first kilometer and $Rs. 4$ per kilometer for the subsequent distance covered. Write the linear equation to express the above statement and draw the graph of the linear equation.

Express the following linear equation in the form $ax + by + c = 0$ and indicate the values of $a, b$ and $c$ in each case:
$3x = 2y + 1.\overline{5}$

The point of the form $(a, -a)$ always lies on the line