Answer:
(a)18 cents
(b)18
Explanation:
Part A
To determine how much the cost of the cheese increase for each ounce Brian buys, we need to find the slope of the line.
Pick any two well-defined points on the line:
[tex]\begin{gathered} (x_1,y_1)=(1,18) \\ \mleft(x_2,y_2\mright)=\mleft(2,36\mright) \end{gathered}[/tex]
Substitute these points into the slope formula to find the slope.
[tex]\text{Slope, m=}\frac{y_2-y_1}{x_2-x_1}=\frac{36-18}{2-1}=\frac{18}{1}=18[/tex]
For each ounce of cheese Brian buys the cost increases by 18 cents.
(b)As seen from part(a), the slope of the line is 18.
