Answer:
No
Reasoning:
There are two ways to figure this out.
1. You know when a function is linear when the equation is in the slope-intercept format. Which looks like
![y=mx+b](https://img.qammunity.org/2021/formulas/mathematics/middle-school/yj5waqmoy4i54laybzhhshd88hyo5w5rj5.png)
This does not look like that. So, it isn't a linear function.
2. Graph! If you graph the function, the graph will look like the figure below. It's not a line. This is called a parabola. Meaning, it's not a linear function.