Write an equation of the line that goes trough the points (3,-1) and (-2,14)?

Which expression is equivalent to? assume x > 0 and y > 0.

The sum of two numbers is 86, and their difference is 20. find the two numbers

Water flows at a steady rate from a tap. its takes 40 seconds to fill a 4 litre watering can from the tap. the rate at which water flows from the tap is halved. complete: 4 litres into cm3