Question

8. Calcula points 7. The relationship between the latitude Lof a city in the Northern Hemisphere and its average annual temperature Tis modeled by the function T = -0.68L + 89.5. The slope of this linear function means (A) (B) (C) (D) (A) That temperature at the equator would be 89.50 (B) For every degree increase in latitude, the average annual temperature increases by 89.50 (C) For every degree increase in latitude, the average annual temperature increases by 0.68º. (D) For every degree increase in latitude the average annual temperature decreases by 0.689

Answer 1

The slope of the linear function T=-0.68L+89.5 is

`(dT)/(dL)=-0.68`

Since the slope is negative, for every degree increase in latitude the average annual temperature decreases by 0.689​. Answer is (D).