6.
A. [tex]-\frac{1}{5}[/tex]
B. [tex]\frac{x1}{5}[/tex]
C. –5
D. 5

Answer:
[tex]\frac{1}{5}[/tex]
Step-by-step explanation:[tex]d=-1\frac{1}{5}-(-2) =-1\frac{1}{5}+2=\frac{1}{5}[/tex]