Question

If $y=a+\frac{b}{x}$, where $a$ and $b$ are constants, and if $y=1$ when $x=-1$, and $y=5$ when $x=-5$, then $a+b$ equals.

• A. $-1$
• B. $0$
• C. $1$
• D. $10$
• E. $11$

Answer 1

The correct option is E $11$

$y=a+\frac{b}{x},1=a-b,5=a-\frac{1}{5}b\therefore b=5;a=6$