The table shows the proportional relationship of the cost of lettuce per pound.

Question

Pounds of Lettuce Price
0 $0.00
2 $2.16
4 $4.32
6 $6.48
10 $10.80

What is the constant of proportionality in terms of the number of dollars per pound of lettuce?
A.
3.16
B.
1.08
C.
2.16
D.
0.54

Answer 1

To find the constant of proportionality, you can use one of the given points from the table. The constant of proportionality (k) is defined as the price per pound of lettuce.

Using the point where 2 pounds of lettuce costs $2.16:

\[ k = \frac{\text{Price}}{\text{Pounds}} = \frac{2.16}{2} = 1.08 \]

So, the constant of proportionality in terms of dollars per pound of lettuce is:

B. 1.08