Question

Which of the following statements are true regarding functions?

Check all that apply.

A.A sequence is a function whose domain is the set of real numbers.
B.The vertical line test may be used to determine whether a function is one-to-one.
C.A function is a relation in which each value of the input variable is paired with exactly one value of the output variable.
D.The horizontal line test may be used to determine whether a function is one-to-one.