Question

Find the value of $p$ if the point $(p,2)$ lies on the line $3x+y=11$

Answer 1

Since $(p,2)$ lies on line $3x+y=11$

$\therefore 3\left(p\right)+2=11$

$\therefore 3p=9$

$\therefore p=\frac{9}{3}=3$

$\therefore p=3$