Answer:
The slope is 2.
Explanation:
To find the slope we can take two points from the graph (in this example I'll use (3, 2) and (4, 4)) and input them in this expression:


Solve:
4 - 2 = 2
4 - 3 = 1
= 2
The slope of the line connecting Saturn and Earth is 2.
Hope this helps :)