The regression line graphed in the scatterplot have the equation
How to find the equation
The equation graphed is written in the slope intercept form s below
y = mx + c
where
m = slope
x = intercept
the slope, m is calculated using the points on the graph (1, 2) and (9, 10)
m = (y₀ - y₁) / (x₀ - x₁)
m = (2 - 10) / (1 - 9)
m = (-8) / (-8)
m = 1
c = y intercept, from the graph
c = 1
Hence we have the equation as: y = x + 1