How is (s-t)(s/t) equivalent to (s^2/t) -s

When only separate discreet points are graphed it is called?

The following frequency table relates the weekly sales of bicycles at a given store over a 42-week period.value01234567frequency367108521(a) in how many weeks were at least 2 bikes sold? (b) in how many weeks were at least 5 bikes sold? (c) in how many weeks were an even number of bikes sold?

Give me the equations of two lines that have the same slope but are not parallel.