Answer:
a = - 3
Step-by-step explanation:
Since the point (- 3, 2) is on the line then its coordinates make the equation true.
Substitute x = - 3, y = 2 into the equation and solve for a
a(- 3) - 2(2) = 5, that is
- 3a - 4 = 5 ( add 4 to both sides )
- 3a = 9 ( divide both sides by - 3 )
a = - 3
