This week in math we learned how to calculate the slope of a graph. So first, the basic rule is slope=rise/run. To start, find the rise by finding the point at where the incline starts on the y-axis, then you would find the ending point of that slope on the same axis. Subtract the first number of the starting point, from the number of the ending point. That is the rise of the slope, do the same next to find the run, but instead on the x-axis.
So now, once you have the rise and run you would plug in the numbers to the equation I previously stated, slope=rise/run and then solve it, which would give you the slope. That is all you need to do to find the slope!
Here is an example: