If the point (3, 4) lies on the graph of the equation 3y = ax + 7, find the value of a.

Given equation: 3y = ax + 7

⇒ ax = 3y – 7

Since, the point (3, 4) lies on the graph of the equation 3y = ax + 7 therefore, it should satisfy the equation 3y = ax + 7

So, x = 3 and y = 4

Putting these values we get,