You divide everything by 2.
Your answer is
Y=1/2 + 3/2
That means that head was the most one to appear than tails
So first I hope this helps! But from what I’ve learned in school is that a unit rate pretty much just mean *1... so in words the answers would be 1/6 and hour for every 2/23 miles
Since both x values are the same and since the y values are 18 digits apart, the distance between both points is 18 units.