For nine months, Joan observes the average dailygas consumptionfor her house and the corresponding averagetemperaturethat month. She gets the following scatterplot (with regression line equation presented and drawn in):

Interpreting the regression line (formula above the graph), in general, about how much is gas consumption reduced for each degree increase in average temperature in any given month?

[ Select ]

["

1438

", "

43

", "

800

", "

20

"]

Over the nine months Joan took measurements, approximately what was the range of gas consumptions?

[ Select ]

["

38

", "

800

", "

20

", "

1438

"]

For a month in which the average temperature is 40, predict the daily amount of gas consumed for that month.

[ Select ]

["

800

", "

309

", "

425

", "

630

"]

After collecting the data, Joan had insulation installed in her home. The next month, the average temperature was 30 and her home (with insulation) consumed 682 gas daily. Approximately how much gas did the insulation save her daily that month?

[ Select ]

["

100

", "

150

", "

50

", "

200

"]

Which of the terms does apply to the relationship between temperature and gas consumed?

[ Select ]

["

positive

", "

weak

", "

perfect

", "

linear

"]