Question

At the local bookstore, 4 pape back books cost 20$. The table below represents the amount of books compared to the cost.

Answer 1

The relationship between the two variables can be determined as the slope, which is;

`\begin{gathered} m=(y2-y1)/(x2-x1) \\ \text{Where;} \\ x1=3,x2=4,y1=15,y2=20 \\ m=(20-15)/(4-3) \\ m=(5)/(1) \\ m=5 \end{gathered}`

This means for every ordered pair in the table, the books multiplied by 5 gives the cost.

Therefore the ordered pair that would be included in the table is (10, 50) which is option number 4.