Question

The given diagram shows a relation between the elements of $A$ and $B$.


If we denote the elements of A by $x$ and those of B by $y$.

What will be the relationship between $x$ and $y$ ?

• A. $x=y^2$
• B. $x=\pm y$
• C. $x=y$

Answer 1

The correct option is B $x=\pm y$

From the image, we can decipher that:

When,
$x=-2$, we have $y=-2$ and $y=2$
$x=0$, we have $y=0$
$x=2$, we have $y=-2$ and $y=2$
$x=4$, we have $y=-4$ and $y=4$

This can only be satisfied with the relation $x=\pm y$

So, option (b.) is correct.


​​​​​​​