As per given by the question,
The are given that a line on a grapg.
Now,
For the slope of the given graph ;
According to the graph, Donald swan 6 miles at a constant pace .
So,
From the formula of slope,
[tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]
Here, point from the graph is,
[tex](x_1,x_2)=(2.5,5),and(y_1,y_2)=(6,\text{ 3)}[/tex]
Now,
[tex]\begin{gathered} m=\frac{y_2-y_1}{x_2-x_1} \\ m=\frac{6_{}-3_{}}{5_{}-2.5_{}} \\ m=\frac{3}{2.5} \\ m=1.2 \end{gathered}[/tex]
So, the value of slope is 1.2.
Hence, the option d is correct.
