Question

Observe the table below and draw a graph.


From the graph, the unit rate per lb will be .

• A. $15
• B. $20
• C. $5
• D. $10

Answer 1

The correct option is A $15

The table given in the question is:

So, the points to be plotted on a graph from the given table are: (10,150), (20,300), (30,450), (40,600).

On the graph, prices are represented on the y-axis and weights on the x-axis.

Now, by plotting the points, the obtained graph is,

Now, we know,
Unit rate = Constant of proportionality

From the graph, we get,
$\text{Unit rate}=\frac{150}{10}=\frac{300}{20}=\frac{450}{30}=\frac{600}{40}=15$

∴ Unit rate per lb is $15.