The equation of the line is y - 1 = ( 5/6)(x - 1 ).
What is the equation of a line passing through two points?
Suppose the given points are (x₁, y₁) and (x₂, y₂), then the equation of the straight line joining both two points is given by
[tex]\rm (y - y_1) = \dfrac{y_2 - y_1}{x_2 - x_1} (x -x_1)[/tex]
Write an equation for the trend line.
(x₁, y₁) → (1,1)
(x₂, y₂) → (-5,6)
Then we have
y - 1 = [ 6 - 1 ]/[-5-1](x - 1)
y - 1 = ( 5 / -6 )(x - 1)
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