1. Find the minimum or maximum value of the following quadratic function.
a. y = 5x
2 + 3x − 1
b. y = −x

2 − 2x + 15

2. Find one equation for each of the quadratic function given its zeros.
a. 5, -2
b. -2, 5
2
3. Solve.
a. An object is thrown straight up into the air with the given equation of the
height s(t) = −16t
2 + 80t.