The given plot is a scatter plot. A linear relationship can be determined from the plot. We can apply the slope intercept equation to determine the linear relationship. It is expressed as
y = mx + c
Where
m represents the slope
c represents the y intercept
y represents the scores
x represents the amount of time spent
We would try to pick points that could possibly form a straight line.
recall:
slope, m = (y2 - y1)/(x2 - x1)
Looking at possible linear points,
x1 = 0.75
y1 = 50
x2 = 2.5
y2 = 70
m = (70 - 50)/(2.5 - 0.75) = 20/1.75
m = 11.4