The slope of a graph is the rate of change of the graph.
The true statement is: (b) For each additional pound, the price increases by $1.50.
From the table (see attachment), we have the following points
[tex]\mathbf{(x_1,y_1) = (4,6)}[/tex]
[tex]\mathbf{(x_2,y_2) = (8,12)}[/tex]
The slope (m) is calculated as follows:
[tex]\mathbf{m = \frac{y_2 - y_1}{x_2 - x_1}}[/tex]
So, we have:
[tex]\mathbf{m = \frac{12 - 6}{8 - 4}}[/tex]
[tex]\mathbf{m = \frac{6}{4}}[/tex]
[tex]\mathbf{m = 1.50}[/tex]
The slope of the table is 1.50
This means that:
For each additional pound, the price increases by $1.50.
Hence, option (b) is true
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