Identifying Functions
Completion requirements
A relation is a rule that describes a relationship between two variables. It can be represented in various ways: verbally, as a set of ordered pairs, as an equation, or as a graph on a coordinate plane. A function is a particular kind of relation. This lecture series discusses how to recognize functions when they are given by different representations. Watch the videos and complete the interactive exercises.
Evaluate functions - Questions
1. Find the output, \(g\), when the input, \(r\), is \(3\).
\(g=-5 r+13\)
2. Find the output, \(b\), when the input, \(a\), is \(6\).
\(b=-1-7 a\)
3. Find the output, \(y\), when the input, \(x\), is \(5\).
\(y=5 x-3\)
4. Find the output, \(k\), when the input, \(t\), is \(-7\).
\(k=10 t-19\)