What is the unit rate of (5,6) and (10,12)

Note, this is a fraction equal to
5 miles ÷ 10 hours

We want a unit rate where
1 is in the denominator, 
so we divide top and bottom by 10.

5 miles÷ 1010 hours÷ 10
=0.5 miles1 hour
=0.5 mileshour
= 0.5 miles per hour