Use linear function in a sentence
If you are looking at a graph and the lines are not straight then you are not looking at an example of a linear function.
The student was having a hard time understanding linear function but his tutor helped him and he realized how easy and simple it was and that plotted on a graph came up a simple straight line.
Okay class, today we will be studying linear function, I want you to pull up the graphing capability on your calculators. Please enter in y=1+2x , the resulting graph should be a straight line.