Question

a. draw a trend line on the scatter - plot.
b. use your trend line to write an equation that would fit the data.
equation
c. interpret the slope of the line based on the context.

Explanation:

Step1: Draw trend line

Visually connect data points with a straight - line.

Step2: Find equation

Pick two points on trend line, use slope - intercept form $y = mx + b$. Calculate slope $m=\frac{y_2 - y_1}{x_2 - x_1}$, then find $b$.

Step3: Interpret slope

Positive slope means increase, negative means decrease over years since 2014.

Answer:

a. (Draw trend line manually on plot)
b. (Equation depends on points chosen)
c. (Interpret based on sign of slope)