Why might knowing the slope of a ski run help you understand whether it is appropriate, too easy, or too advanced for you? What could go wrong if you didn't understand slope?

How can you construct perpendicular lines and prove theorems about perpendicular lines

David estimated he had about 20 fish in his pond. a year later, there were about 1.5 times as many fish. the year after that, the number of fish increased by a factor of 1.5 again. the number of fish is modeled by f(x)=20(1.5)^x. create a question you could ask that could be answered only by graphing or using a logarithm.

Solve the formula ax+ by = c for x.