Question

find the value of a such that (3,a) represent the line 2x-3y=5

Answer 1

Hey friend here is the answer
X=3,y=a
Putting these value we get
2*3-3*a=5
6-3a=5
3a=6-5
a=1/3

Answer 2

$2(3) - 3y = 5 \\ 6 - 3(a) = 5 \\ 6 - 3a = 5 \\ - 3a = 5 - 6 \\ - 3a = - 1 \\ a = \frac{1}{3}$