B)1
Explanation
[tex]\frac{y-x}{x}[/tex]Step 1
evaluate when
x=4
r=6
p=3
y=8
all we have to do is replace, the character with the given value, so
[tex]\frac{y-x}{x}\rightarrow\frac{8-4}{4}=\frac{4}{4}=1[/tex]so, the answer is B)1
I hope this helps you
