Answer:
Answer below
Explanation:
If you mean constant of proportianality, that is just basically the unit rate. If you have point on the graph, you probably want to write down their coordinates. once you do that you see if the line are going up right diagonally or left diagonally. once you do that, you going to want to take the y coordinate from the highest point on the graph and subtract the y from the lowest point on the graph. repeat for x. finally, put the y answer over the x over to create a fraction. if you can make it a whole number do that, but most teachers won't want you to convert it to a mixed number.
I hope I answered what you were actually asking for lol.