Question

Linear relationships are important to understand because they are common in the world around you. For example, all rates and ratios are linear relationships. Miles per gallon is a common rate used to describe the number of miles a car can travel on one gallon of gasoline. Dollars per gallon, or the price of gas, is a linear relationship as well. What other relationships can you think of that are linear? How do they affect your everyday life?

Answer 1

No actually what ever happens to in inequality note is what going to stay as an inequality note, same with Miles per gallon is a common usage as if you are to be noticed at a restaurant.  But I will give you this that they are common around you.