Question

bell ringer - graphing

amount of nitrogen in water, ppm
0.35
0.30
0.25
nitrogen in 0.20
water, ppm 0.15
0.10
0.05
0
0 0.2 0.4 0.6 0.8 1 1.2 1.4
distance from sewage treatment plant, kilometers

what is the dependent variable?
○ distance from sewage plant
○ amount of nitrogen in water
○ date and time
○ velocity of sewage

Explanation:

In a graph, the dependent variable is the one whose value depends on the independent variable. Here, the x - axis (independent variable) is "distance from sewage treatment plant", and the y - axis (dependent variable, as its value changes with distance) is "amount of nitrogen in water". The other options (date and time, velocity of sewage) are not represented on the graph, and "distance from sewage plant" is the independent variable.

Answer:

B. amount of nitrogen in water