Answer:
y = [tex]-9 \frac{1}{2}[/tex]
Step-by-step explanation:
9x-4y = 20
Given that x = -2
Putting in the above equation
9(-2) -4y = 20
-18 - 4y = 20
-4y = 20+18
-4y = 38
Dividing both sides by -4
y = [tex]-\frac{38}{4}[/tex]
y = [tex]-\frac{19}{2}[/tex]
y = [tex]-9 \frac{1}{2}[/tex]
