Answer:
C
Step-by-step explanation:
to calculate the slope m of the line use the gradient formula
m = ( y₂ - y₁ ) / ( x₂ - x₁ )
with (x₁, y₁ ) = (- 2, 5) and (x₂, y₂ ) = (2, 1) ← 2 points on the line
m = [tex]\frac{1-5}{2+2}[/tex] = [tex]\frac{-4}{4}[/tex] = - 1 → C
