Question

Which ordered pair, when graphed, would not show a function?

(miles per gallon, gallons in tank)
(length of shadows/time of day)
(temperature in F, temperature in C)
(number of employees, number of hours worked)

Answer 1

(number of employees, number of hours worked)

Explanation:

Answer 2

• a) miles per gallon, gallons in tank

Explanation:

All the options show functional relationship but the first one

a) miles per gallon, gallons in tank

• There is no direct relationship between these parameters as miles per gallon depends on the speed and the way of driving. This won't be a function when graphed.

b) length of shadows/time of day

• Shadow depends on the time of the day and its length wont repeat at different angles. This is a function.

c) temperature in F, temperature in C

• This is a function as each input will have a unique output.

d) number of employees, number of hours worked

• Hours of work depends on number of employees. This is a functional relationship.