1. Peter works as a delivery person for a bike shipping company. The graph shows a linear model for his delivery times on different days.
Peter's Deliveries
28
26
24
22
20
18
Delivery time (min)
16
14
12
10
8
6
4
2
0
1 2 3 4 5 6 7 8 9 10 11 12 13
Time (days)
(a) What the equation of the line, first written in point-slope form and then written in slope-intercept
form? Show how you determined the equation
(b) Based on the linear model, predict how long it initially took Peter to deliver his packages (y-intercept).
Approximately how much did his delivery time decrease per day (slope)? Complete sentences