When you look at the graph you can see that as you get older your breathing capacity will decrease. If you look at the trend line you will be able to see a strong linear negative correlation between the two variables, age and breathing capacity. You can easily tell there is a trend because all the data points are in one standard deviation of the line of best fit. With this holding true then you will be able to easily tell that age negatively effects breathing capacity. You can see this in the data points of age 25 with a breathing capacity of 100 percent, but then at of age 75 with a breathing capacity of 44 percent. So with this you can come to the conclusion that age will effect your breathing capacity in a negative way.
