Question

The graph below represents the rate for the cost of b books.

Cost per Book
y
Cost (dollars)
10
9
8
7+
6
5
4
3
2
1
X
0
1 2 3 4 5 6 7 8 9 10
Number of Books
Write an equation to represent the cost, c.​

Answer 1

Is this graph (Proportional ). What is the constant rate (1/5 )? Write an equation for this graph (y = 1/5x)

This should be correct :P

Answer 2

c = 5b

Explanation:

The graph shows 1 book costs $5, so "b" books will cost 5b dollars:

c = 5b