Question

How are the variables on the graph related?

Answer 1

Correct answer:
"D. As speed increases, height increases."

The x-axis is the one that indicates speed. The y-axis is the one that indicates height. As points of the represented line on the graph get bigger as to their x coordinate, they also get bigger on their y cordinate. When x increases, y increases also. This shows that their is a proportional relation between both the speed and height.