The speed of an object in space is shown in the graph.
What is the slope of the line?
A.10
B.15
C.20
D.25

Answer:
B
Step-by-step explanation:
To find the slope, find the vertical distance and the horizontal distance between the points. Then write the distances as a ratio.
6 - 3 = 3
0.4 - 0.2 = 0.2
The slope is 3/0.2 = 15.