Answer:
1
Step-by-step explanation:
Slope is rise
run
identify 2 points on the graph that the line passes through. start at the leftmost point and determine how many points up the next point is (this is the rise part). then determine how far the points are from each other (this is the run part)
In this case you end up with 1/1, 2/2, 3/3, etc. All of which are equal to one
have a nice day :)
