Question

If $4x+5y=23$ passes through the point $(2,a)$, then the value of $a$ is ___

Answer 1

If $4x+5y=23$ passes through the point $(2,a)$, the point will satisfy the equation

$4\left(2\right)+5a=23$

$5a=23-8$

$a=\frac{15}{5}$

$a=3$