This week, we did a lot of preparing on the test and today, I took the test. One word that popped up frequently on the test was “Functions.” I wanted to make this weeks post about the definition of functions because, although it is very simple, when studying for the final exam, I want to be able to look at this post and remember this key word. The word function means to have only one partner or only having one input and one output. This is usually written as f(x) where x is represented as the input.

Ex. f(2)

f(x)=2x+5

f(2)=2(2)+5

f(2)=4+5

f(2)=9

This is an example of a function because, there was only one input (2) and one output (9.)