Answer:
y + 1 =
(x - 1)
Step-by-step explanation:
The equation of a line in point- slope form is
y - b = m(x - a)
where m is the slope and (a, b) a point on the line
Calculate m using the slope formula
m = (y₂ - y₁ ) / (x₂ - x₁ )
with (x₁, y₁ ) = (1, - 1) and (x₂, y₂ ) = (5, 2)
m =
= 
Using (a, b) = (1, - 1), then
y - (- 1) =
(x - 1), that is
y + 1 =
(x - 1)