Question

If (-3,4) lies on 3y=ax+7 find the value of a.​

Answer 1

Putting x=-3 and y=4,

$3 \times 4 = a \times ( - 3) + 7 \\ = > 12 - 7 = - 3a \\ = > a = \frac{5}{ - 3}$

Answer 2

x=-3,y=4.

3y=ax+7

3×4=a×-3+7

12-7=-3a

5/-3=a