A line passes through the points -6,4 and -2,2 which is the equation of the line

Option 1: $30 an hour plus a nonrefundable deposit of $50 option 2: $20 an hour plus a nonrefundable deposit of $75 kyle is renting a jetski for the day. if he can rent the jetski in one hour increments, what is the minimum number of hours must he rent the jetski for option 2 to be a better deal then option 1?

How do i simply this expression (quadratic formula basis) on a ti-84 or normal calculator?

Which equation represents a line that passes through the point (9, -4) and has a slope of 3/5?