empathy got her uncle.s situation
A(x,y) b(x,y) slope is y-y\x-x
so Ay-BY/AX-BX
d-0\0-d
d/-d=-1
Answer:
Fiction would follow the fiction schema (alphabetical by author last name, first name and then by title within an author). Non-fiction would be shelved according to the Dewey Decimal System.
hope it helps
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