A function and its inverse are reflected over the line y = x. To graph a function and its inverse, all you have to do is graph the function and then switch all x and y values in each point to graph the inverse.
You can change the denominators so they are alike.

Not sure how there can be two possible answers unless you're mentioning the decimal form:
.775
Tell me if this helps!!
The standard form is 26,663 hope this answers your question
Answer:
(-1)*(-1)=1
1*(-1)= -1
first option (-1) is the right answer.