mykamorrow
19.10.2019 •
Mathematics
An air conditioning and heating repair firm conducted a study to determine if the average outside temperature could be used to predict the cost of an electric bill for homes during the winter months in houston, texas. the resulting regression equation was: y = 227.19 - 1.45x, where y = monthly cost, x = average outside air temperature if the temperature averaged 48 degrees during december, what is the forecasted cost of december's electric bill?
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Ответ:
Y=157.59
Step-by-step explanation:
In this problem we only have to substitute X by 48.
Ответ:
-4
Step-by-step explanation:
You have to get both of the points (0,-9) and (-5,-1) and divide them by their rise/run which is equivalent to slope. SoWe start on top with -5--9/-1-0= 4/-1 This makes the slope -4 when it is dividedI hope I helped you!!! remember the formula is the horizontal/vertical length.