Answer:
and 
Step-by-step explanation:
we have the coordinates
A(2,7),B(2,2),C(7,6)
we know that
The mid segment of triangle ABC that is parallel to line AB is located between the mid point AC and the mid point BC
The formula to calculate the midpoint between two points is equal to

step 1
Find the mid point AC
we have
A(2,7),C(7,6)
substitute in the formula


step 2
Find the mid point BC
we have
B(2,2),C(7,6)
substitute in the formula


therefore
The endpoints of the mid segment of triangle ABC that is parallel to line AB are
and 
The operator
is transitive, which means exactly that

That's the only thing you can deduce from your statement.
Speed
Riding speed = 9 mph
Driving speed = 27 mph
Time
If x hours is the time taken when riding, (x - 1/3) hours is the time taken when driving.
Distance in both instances is the same, D= Speed * time
Therefore,
9*x = 27(x-1/3)
9x = 27x - 27/2
9x = 27x - 9
(9-27)x = -9
-18x = -9
x = 9/18 = 1/2 hours
Distance, D = 1/2 *9 = 4.5 miles