What is the point (-4,6) after it's rotated 90 degree clockwise

Me n o w. i need t h i s. 10 points

Factor the polynomial by its greatest common monomial factor.

Delbert keeps track of total of the total number of points he earns on homework assignments, each of which is worth 60 points. at the end of the semester he has 810 points. write an equation for delbert’s average homework score a in terms of the number of assignments n.