I modeld the relationship btween X = the outside temperature ( in F) and Y= the

Question

I modeld the relationship btween X = the outside temperature ( in F) and Y= the monthly cost to heat my home ( in $). the equation is:

cost ($) = 388.80 - 4.93 Temperature (F).

Which of the following would be a correct interpetation of these results?

a- I predict the cost to heat my home will increase 4.93 when the outside tempreture increase 1 F.

b- I predict the cost to heat my home will be $388.80 when the outside temperature is 4.93 F

c- I predict the cost to heat my home will decrease $4.93 when the outside temperature inereases 1 F

d- I predict the cost to heat my home will increase $388.80 when the outside temperature inecreases 1 F

Explanation / Answer

Option (c) is the correct option

The equation is Y = 388.80 - 4.93 X

This equation clearly shows that If X increases by 1 unit, the cost, i.e. Y will decrease by 4.93.

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