Answer:
- 36
Step-by-step explanation:
1. y= - [tex]\frac{1}{9}[/tex] x --> substitute y with 4 (given value)
2. 4 = - [tex]\frac{1}{9}[/tex] x --> by multiplying 9 both side get rid of the 1/9
(4= - [tex]\frac{1}{9}[/tex] x)9 --> 36= - x
3. multiply " - " to both side to make "- x" to "x" --> (36= - x) - --> - 36 = x
- 36 = x => x = -36
