Answer:
y= -1.5x-7
Explanation:
y= -16 (total amount of meters below ground)
m= -1.5 (slope; meters he descends per minute)
x= 6 (minutes)
b= -7 (starting point)
thus; y= -1.5x-7
because; -16=(-1.5)(6)-7
note; remember, they are descending so most of your values will be negative