When the factors of a trinomial are (x+p) and (x+q) then the constant term of the trinomial is

Which of the following graphs could represent a cubic function?

Which of the following is best modeled using a linear equation y=ax+b, where a is less than 0?

If two parallel lines are cut by a transversal, interior angles on the same side of the transversal are supplementary. a. always b. sometimes c. never