Ratio Tables And Graphs 4 Lincoln loves to read. The table shows the price he pays
to buy different paperback books. Complete the table and
then graph the values on the coordinate plane. Determine
how much it costs to buy 4 books by looking at the graph.
Cost
60
54
48
42
36
30
24
18
12
6
Number
of Books
1
3
7
10
4
Cost
$18
$54
0
2 4 6 8 10
Number of Books

answer: the common difference is -0.10

answer: the price of one pound cabbage = $ 0.8

the point (10,8) represents that the cost of 10 pounds cabbage is $ 8

step-by-step explanation:

since, here is a proportional relation between the number of pounds of cabbage (x) and the price in dollars (y).

therefore, we can write,

⇒ y = k x

where k is the constant of proportionality.

now, point (5,4) is in the line.

thus, it will satisfies the above equation of line.

⇒ 4 = 5 k

⇒ k = 0.8

thus, the equation of the line is,

y = 0.8 x

a) for x = 1,

y = 0.8

therefore, the cost of one pound of cabbage is 0.8 dollars.

b) in the below graph (10,8) represents that the cost of 10 pounds of cabbage is 8 dollars.

x=0

step-by-step explanation: