Solution
- The constant being asked for is the slope of the graph.
- The formula for finding the slope of a graph is:
![\begin{gathered} m=(y_2-y_1)/(x_2-x_1) \\ where, \\ (x_1,y_1)\text{ and }(x_2,y_2)\text{ are the points on the line} \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/7257p65sue4q9vzkp5txgp61u21zpj3ht6.png)
- The points on the graph that we will use are:
![\begin{gathered} (x_1,y_1)=(2,3) \\ (x_2,y_2)=(4,6) \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/4wjmifkj0xskdumd45tidt70sdhoqaht8q.png)
- Thus, we can find the constant as follows:
![\begin{gathered} m=(6-3)/(4-2) \\ \\ m=(3)/(2)=1.5 \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/py6gvtv1jgo6ibbppikpdd68xsh75tjgn1.png)
Final Answer
The constant(slope) is 1.5 (OPTION D)