DrH = DrT + 0.019
DrE = DrH - 0.020
DrH is the most and DrE is the least
Answer:

Step-by-step explanation:
Trend line passes through the points (6,12) and (4,16).
Find the slope of the line:

Write the equation of the line in the form
where the slope 

This line passes through the point (6,12), then its coordinates satisfy the equation:
