Question

If $y=x^2+x$ ; where $x$ is a prime number below $5$, what will be the coordinates of $x$ and $y$ ?

• A. ($2,6$) and ($3,12$)
• B. ($2,3$) and ($6,12$)
• C. (a) and (b) above

Answer 1

The correct option is A ($2,6$) and ($3,12$)

Since $x$ is a prime number below $5$, it can have either the value of $2$ or $3$.

$y=x^2+x$

When, $x=2$
$y=2^2+2=4+2=6$

When, $x=3$
$y=3^2+3=9+3=12$

So, the two possible coordinates for ($x,y$) are ($2,6$) and ($3,12$).

Option (a.) is correct.