The graph in the question shows the relationship between the price and the number of plates.
We can deduce that
The price of 4 plates is $7
We can use the information to get the unit price
By cross multiplying
The unit price can be calculated as:
[tex]\begin{gathered} x=\frac{1\times\text{ \$7}}{4} \\ \\ x=\frac{\text{ \$7}}{4} \\ \\ x=\text{ \$1.75} \end{gathered}[/tex]
Thus, the answer will be $1.75
