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trombonebookworm
If the graph of the equation is straight, it is linear. If it is not, then it is non-linear.

Hope this helps!
Your fortune is "You will change someone's life within the next few weeks."
Hello There!

Linear simply means straight.
Graph out your equation and see if it is straight.
If it is, then it is a linear equation.
If it isn't straight, then it is a non linear equation.

Hope This Helps You!
Good Luck :) 

- Hannah ❤