The points provided in the question can be arranged in a tabular format in a graphing calculator as shown below:
A linear regression model is given in the form:
[tex]y=ax+b[/tex]The graph can be drawn using the graphing calculator to model the relationship:
The graphing calculator provides the following information about the relationship:
The parameters are:
[tex]\begin{gathered} a=-1.4 \\ b=7.8 \end{gathered}[/tex]Substituting these parameters into the linear regression model, we have the relationship to be:
[tex]y=-1.4a+7.8[/tex]