Quadratics in Golfing!

By: Brett Coleman and Anand Singh

Question 1-4

function: f(t)=-16t^2+100t


f(t)= height of the golf ball

t= time elapsed


The independent variable in this situation is the amount of time that has passed by and the dependent variable is the amount of feet the ball is in the air.


Domain: 0 < x < 6.25

Range: 0 < X < 156.25


The x axis title from the graph to left is time (S.) and the y axis title is the distance (ft.) in air.



The ball was in the air for 6.25 seconds

Question 5-6

The maximum height the ball would be in the air is 156.25 feet.


The ball is at it's maximum height after 3.13 seconds.


The x axis title from the graph to left is time (S.) and the y axis title is the distance (ft.) in air.


The graph is used for Question 5 and 6.

Question 9

Tweety Bird will be increasing 4 feet per second. The equation would be y=4x meaning that this is a linear function. Tweety Bird will be the same height as my ball after six seconds. The height of the ball will be 24 seconds.


The x axis title from the graph to left is time (S.) and the y axis title is the distance (ft.) in air.

Question 10

Gloria's ball hit the ground 1.25 seconds before Earl's and went only 100 feet in the air.


The x axis title from the graph to left is time (S.) and the y axis title is the distance (ft.) in air.

Question 11

a. The ball's elevation increased by 20 feet.

b. Y=-16X^2+100X+20

c. X axis: time past Y axis: feet in the air

d. Domain: 0<X< 6.25 Range: 20<X<176.25