56 6 repeating when rounded to the nerest .1 is 56.7
-3.6
Explaination: it goes through the 6 and -3 points in the slope.
It will increase by 5/9 of a degree.
If you convert the given equation into slope intercept form, you will have:
c = (5/9)f + 160/9
In this form, it is easier to see the slope. The line would be increase by a rate of 5/9.