How are the variables related on the graph? |A first quadrant graph is shown with the x-axis labeled 'Speed' and the y-axis labeled 'Height.' There is a ray drawn from the origin towards the upper right corner of the first quadrant.|

A. As speed decreases, height stays constant.
B. As speed decreases, height increases.
C. As speed increases, height decreases.
D. As speed increases, height increases.

I think D? I started a new unit and I'm a little stumped here. I think I found the answer, but I just wanted to double check with an expert. Thanks!

Statement reason 1. δabc is similar to δced. given 2. 3. definition of slope 4. slope of slope of definition of slope 5. slope of × slope of multiplying the slopes 6. slope of × slope of substitution property of equality 7. slope of × slope of simplifying the right side the table contains the proof of the relationship between the slopes of two perpendicular lines. what is the reason for statement 2? a. parallel line segments that meet a common perpendicular line are proportional in length. b. the lengths of vertical and horizontal sides in congruent triangles are in a common ratio. c. trigonometric identities determine the lengths of the legs in a right triangle. d. corresponding side lengths in similar triangles are proportional in length.