So I have an exam tomorrow on linear and proportional relationships and I'm going through the study sheet and I'm still confused on the difference between linear and proportional relationships. Can someone explain this to me?

The practice questions that I don't know are (yes...it's very elementary)

- What is the relationship between the length of a square and the area of a square (options are linear, proportional, or neither)?

- What is the relationship between the E and m in the equation E=mc2?

- What is the relationship between the elevation at sea level and an elevator (as if moves from one floor to the next)?

These are just a few of the practice problems and if I can answers these, i should do well on the proportions/linear part of the exam. Thanks ahead of time.

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