18. GOLF In golf, the first shot on every hole can be hit off a tee. The table shows the height y of the golf ball x seconds after it has been hit off the tee.
7
o
1
3
5
Time (s)
Height (in.)
3
o
20
36
28
a. What are the x- and y-intercepts?
b. What do the x- and y-intercepts represent in the context of the situation?