$\"\"$

From the table, substitute the values of $\"\"$ in the direct variation equation $\"\"$ to find a.

$\"\"$ .

Therefore direct variation equation that relates x and y is $\"\"$ .

To check the equation is direct variation, substitute the all values for x in the equation $\"\"$ to obtain random y - values of table.

If $\"\"$ then $\"\"$ (This is true statement).

Observe the table, a student was mistaken at the value of $\"\"$ . \ \

The all values for x the equation is true. Therefore the table represents direct variation. $\"\"$

The table represents direct variation and the direct variation equation is $\"\"$ .