Answer:
slope = - 1
Explanation:
Calculate the slope m using the slope formula
m = (y₂ - y₁ ) / (x₂ - x₁ )
with (x₁, y₁ ) = (4, - 1) and (x₂, y₂ ) = (- 1, 4)
m = = = - 1
4.8m questions
6.2m answers
= 
= - 1