Question

Which expression better defines a function?

a) Two numbers written in a certain order.
b) A special relationship where each input has a single output.
c) The "output" value of a function.
d) The set of y-values of a function or relation.

Which expression better defines an arithmetic sequence?

a) A function for which every element of the range corresponds to exactly one element of the domain.
b) A sequence made by adding the same value each time.
c) A test to determine if a function is one-to-one.
d) A special relationship where each input has a single output.

Answer 1

A function is a relationship where each input has a single output. An arithmetic sequence is a sequence made by adding the same value each time.

Step-by-step explanation:

A function is a special relationship where each input has a single output. This can be expressed as a) Two numbers written in a certain order. An arithmetic sequence is a sequence made by adding the same value each time. This can be expressed as b) A sequence made by adding the same value each time.