Answer:
y = 1
Step-by-step explanation:
Given the rational function
[tex]\frac{y+3}{y-1}[/tex]
The denominator cannot be zero as this would make the function undefined. Equating the denominator to zero and solving gives the value that y cannot be.
solve : y - 1 = 0 ⇒ y = 1 ← restricted value
