Question

The equation y=(-16t-4)(t-2) represents the height in feet of a beach ball thrown by a child Find the zeros of the functionWhat do the zeros tell us in this situation? From what height is the beach ball thrown ?

Answer 1

See below

Explanation:

To find zeroes:

0 = (-16t-4)(t-2)

so -16t-4 = 0 t = -1/4

or t-2 = 0 t = 2

when the ball is thrown, t= 0

put t= 0 in the equation to find the initial height

y = ( -16t -4)(t-2)

= ( -16(0)-4)(0-2) = (-4)(-2) = 8 ft