(4-1/2) Please answer the questions and solve this quadratic equation which is very similar to the one we did earlier in the week: A goalkeeper threw a ball from the ground to a defender to work up the pitch. Here is the equation that models this situation: -16t2 + 32t

What does the "a" coefficient represent in this type of quadratic equation?

What does the "b" coefficient represent in this type of quadratic equation?

If the units of the equation are feet per second, what do you think the "y" axis represents? The "x" axis?

How many seconds will it take for the ball to hit the ground?