What is the difference between a linear function and a exponential function?

- Prove that linear functions change at the same rate over time. ... Linear functions take the form y = mx + b. An exponential function is in the form y = ax. It is easy to see the difference between a linear and exponential function on a graph.

When you graph a linear function, it is a straight  line ; When ou graph an exponential function, it is a curved line,

Using the rise/run rule. you would get 2/6.simp. 1/3