Answer:

Step-by-step explanation:
The slope of a line is the change in the line. It can be found using the formula;
or
.
Substitute in the given points, and solve for the slope;

Answer:
78 books
Step-by-step explanation:
Use proportion: If 52 is 2/3 of the books then number of books shipped = 52 * the inverse of 2/3 which is 52 * 3/2:-
52 * 3/2
= 156/2
= 78 books
Answer: 4
Step by step explanation
-9-f-7=-7f+8
7f-f=9+8+7
6f=24
f=24/6
f=4
Answer:
c
Step-by-step explanation:
it means 12/60, all the others mean 60/12