What is the gradient of the graph shown

Thelime contains the point(-3,0) and parallel x-3y=3( show all work)

Monthly water bills for a city have a mean of $108.43 and a standard deviation of $32.09. find the probability that a randomly selected bill will have an amount greater than $155, which the city believes might indicate that someone is wasting water. would a bill that size be considered unusual?

What is the relationship between all triangles that can be drawn given the same three angles