A graph titled Starting Salaries has education (years) on the x-axis and Starting Salary (one-thousand dollars) on the y-axis. A line goes through points (10, 20) and (14, 25).
A researcher surveyed 8 people to see if there is a relationship between years of education and starting salaries. The data points are shown on the graph.

Which best represents the equation of the trend line shown on the graph? (Note that the graph has a break on the x-axis.)

y = 0.25x + 15
y = 0.25x + 17.5
y = 1.25x – 10
y = 1.25x + 7.5