For equation $5 x+3 y=90,$ if $x=12$ then $y=\ldots \ldots \ldots$
$21$
$6$
$10$
$12$
If the graph of equation $a x+3 y=21$ passes through the point $(5,2)$ then the value of $a=\ldots \ldots \ldots$
If the point $(3,5)$ lies on the graph of the equation $a x+y=20,$ find the value of $a$.
State whether each of the following statements is true or false
The graph of equation $3 x=4 y$ is a line passing through the origin.
The autorickshaw fare in a city is as follows
For the first kilometre, the fare is ₹ $10,$ for the subsequent distance it is ₹ $3$ per $km$. Taking the distance covered as $x$ $km$ and total fare as ₹ $y,$ write a linear equation for this information and draw its graph. Find the total fare for a journey of $4$ kilometres from the graph.
Any point on the $x$ – axis is of the form
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