What is the domain of the function ℓ(y)=1(y−2)+(y+8) ? Express your answer in interval notation.
ℓ(y)=12y+6
The denominator must not equal 0, so the domain is everything that doesn't equal -3.
x∈(−∞,−3)∪(−3,∞)
+1662 
+1223 
