There is not always one solution.

- [[linear function]], there is almost always only one solution.
- Given [[quadratic function]], most of the time there is either "no solution" or "two solutions".
- Quadratic functions "have only one solution" is as rare as linear functions "have no solution"
- Similarly for general functions, "there is only one solution" is a rare case

• In other words, linear function behavior is rarer in the whole function, but humans tend to misinterpret things as if they were linear functions

• The correct answer is “there is no solution.”

• Not necessarily one.

• non-linear

• blind spot card 37

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