Answer:
Poplar trees grow faster than redwood trees per year because the slope of the graph for poplar trees is greater than that of the graph for redwood trees.
The slope of the graph tells you the unit rate in feet per year.
Explanation:
In the given graph x-axis represents the time in year and y-axis represents the height of trees in feet.
The steeper line has greater slope.
The line of poplar tree is steeper than the line of redwood tree. It means, the slope of graph of the poplar trees is more than the graph of redwood trees.
So, we can say that the poplar trees grow faster than redwood trees.
Here, the slope of the graph represents the change in trees height with respect to time.