Domain Rational Functions

The domain of a rational function is...

At the x-values that are NOT in the domain of a rational function, we usually see the function going up to infinity or down to negative infinity. What is the name of these "walls" of the graph, which the function cannot pass?

What is the domain of the rational function?

What is the domain?

• All real numbers except 1/2

• All real numbers

• All real numbers except -4

• All real numbers except 4

What is the domain of the rational function?

The domain of f(x) is ​ ​ ​ ​ (a)  

• (-∞,-1) U (-1,5) U (5,∞)

• (-∞,-1) U (5,∞)

• (-∞,∞)

• (-∞,-3) U (-3,-1) U (-1,2) U (2,5) U (5,∞)

• (-∞,-5) U (-5,1) U (1,∞)

• (-∞,-5) U (5,∞)

• (-∞,7) U (7,19) U (19,∞)

What is the domain?

• (-∞, ∞)

• (-∞, 1) U (1,∞)

• (-∞, 2) U(2, ∞)

What is the domain?

• (-∞, ∞)

• (-∞, -3) υ (-3, ∞)

• (-∞, 1) υ (1, ∞)