Is this relation a function? Yes, this is a function.
No, this is not a function, just a relation.

Plz me i need i will give a brain

Which of the following graphs represents the function f(x) = 2^x

Sanya noticed that the temperature was falling at a steady rate of 1.4 degrees every hour from the time that she first checked her outdoor thermometer. by 6 a.m., the temperature had fallen 21 degrees. which expression can you use to find how many hours earlier she had first checked the thermometer?