The temperature on one day in January for Phoenix, AZ, is 46 degrees Fahrenheit. On the same day in Barrow, AK, the temperature is -19 degrees Fahrenheit.

46-(-19) = 65

which set of poinst are on the line y=6x-7?

To find the difference between the temperatures in Phoenix, AZ, and Barrow, AK, you subtract the temperature in Barrow from the temperature in Phoenix.

So, the difference between these two temperatures can be calculated as follows:

Phoenix temperature - Barrow temperature = 46°F - (-19°F)
= 46°F + 19°F
= 65°F

Therefore, the difference between the temperatures in Phoenix and Barrow is 65 degrees Fahrenheit.