From the table given alongside, find which equation represents the relation correctly.

$x$	$2$	$4$	$6$	$8$
$y$	$150$	$200$	$250$	$300$

 

There arc some benches in a classroom. If $4$ students sit on each bench, three benches are left vacant; and if $3$ students sit on each bench, $3$ students are left standing. What is the total number of students in the class?

Devesh’s school is $15 \mathrm{km}$ from his home. He covers this distance in $3 \mathrm{hours}$, partly by walking and partly by cycling. If he walks at $3 \mathrm{km}/\mathrm{h}$ and cycles at $9 \mathrm{km}/\mathrm{h}$, how much distance does he cover by cycling?

Complete the magic square using linear equations so that the sum of each row, column and diagonal is equal.

Solve the following equations.

$x-2=7$

Solve the following equations.

$\frac{3}{7}+x=\frac{17}{7}$