Question

Which of the following statements are true regarding functions?

Check all that apply.




A.The horizontal line test may be used to determine whether a function is one-to-one.

B.A function is a relation in which multiple values of the input variable are paired with at least one of the output variable.

C.The vertical line test may be used to determine whether a relation is a function.

D.A sequence is a function whose domain is the set of rational numbers.

Answer 1

A and C

Answer 2

thank you!!

Answer 3

The Vertical Line Test is used to determine whether a Relation is a Function, because a "function" is a relation in which each input value goes to only one value of the output variable. Meanwhile the Horizontal Line Test is used to determine whether a Relation is One-To-One. A sequence is a function whose domain is the set of natural numbers (positive integers).