A research scientist measures the outside temperature, in degrees Fahrenheit, at various

Question

times throughout a 24-hour period and records her findings in the graph below. In this
real-world function, the hours represent the input values, and the temperature represents
the output values. Use the graph to identify the range of the function. Write your answer
as a set of ordered pairs. Then write a sentence to explain what the range represents in
this function.

I did the table, from 2 to 7, 65-80=the temperature rose from 15 degrees.
from 7 to 12 , 80-85= the temperature rose by 5 degrees.
from 12 to 6 pm, 85-75= the temperature lowered by 10.
from 6 pm to 10 pm, 75-60= the temperature lowered by 15 degrees.

I don't get the range.