17.2: Using Functions Last updated Jul 16, 2021 Save as PDF 17.1.1: Identifying Functions 17.2.1: Evaluating Functions Page ID59801 The NROC Project ( \newcommand{\kernel}{\mathrm{null}\,}\) Topic hierarchy17.2.1: Evaluating Functions17.2.2: Graphing Types of FunctionsWhen both the input (independent variable) and the output (dependent variable) are real numbers, a function can be represented by a coordinate graph. The input is plotted on the x-axis and the output is plotted on the y-axis.17.2.3: Finding Domain and Range