Answer:
y =
x - 8
Explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
Calculate m using the slope formula
m = (y₂ - y₁ ) / (x₂ - x₁ )
with (x₁, y₁ ) = (9, - 1) and (x₂, y₂ ) = (0, - 8)
m =
=
=

Note the line crosses the y- axis at (0, - 8) ⇒ c = - 8
y =
x - 8 ← equation of line