Explanation: To calculate a slope we can use the following formula
[tex]\text{slope}=\frac{rise}{run}[/tex]
Below we can see the values for run and rise for our situation
So now we can calculate our slope as follows
[tex]\begin{gathered} \text{slope}=\frac{rise}{run} \\ \text{slope}=\frac{2}{17} \\ \text{slope}=0.117647058 \end{gathered}[/tex]
To calculate the per cent we just need to multiply by 100% as follows
[tex]\text{grade=0.117647058}\cdot100\cong11.8\%[/tex]
Final answer: The grade is 11.8%
