No offense, but that's a completely useless (and actually deceptive) graph. The scale on the y axis is really poorly chosen.
The difference between each line is 2.5E19...
1,000,000,000,000,000,000,000
750,000,000,000,000,000,000
500,000,000,000,000,000,000
250,000,000,000,000,000,000
0
That look better?
The graph is 100^x, in case you're wondering
That's not the issue. For something like that you should use a log scale. I could take the exact same function and make these graphs.
Why use 9+, look at how it shoots up at 8!