Factor the greatest common factor: -4y^2 + 12y – 16. A: -1(4y^2 - 12y + 16)
B: -4y(y^2 - 3y + 4)
C: -4(y^2 - 3y + 4)
D: -4(y^2 + 3y - 4)

Which of the following parabolas opens down?

Awater truck is filling a swimming pool. the equation that represents this relationship is y=19.75x where y is the number of gallons of water in the pool and x is the number of minutes the truck has been filling the pool.

What is the equation of a line that passes through points (0, 4) and (-4,-8)?