3. An arctic cold front is moving through an area. It is 37°
when the temperature begins to drop. The scatter plot
suggests a linear relationship between the temperature
and the number of hours since the cold front arrived.
a. What does the rate of change, or slope, represent in
this situation?
b. What is the y-intercept for the trend line and what
does it represent?
c. What equation relates the change in temperature, y,
to the number of hours after the cold front arrives, x?
Temperature (°F)
Temperature After Cold Front
40
35
30
25
20
15
10
5
0
ty
0
2
4
6
Time (hr)
8
X
10