What are three collinear points on line l?

Write the expression 7x^3-28xy^2 as the product of 3 factors

Marquise has 200 meters of fencing to build a rectangular garden. the garden's area (in square meters) as a function of the garden's width w w (in meters) is modeled by: a ( w ) = − w 2 + 1 0 0 w a(w)=−w 2 +100w what side width will produce the maximum garden area? meters

What is the slope of the line that passes through the points (–9, 2) and (0, 4)? the slope of the line is