I am currently stumped on a question involving line graphs. Can anyone help? I'll post the graphs below.

Question

anonymous · Answer

The table is:

pH of water	Number of tadpoles
8.0	                           45
7.5	                           69
7.0	                           78
6.5	                           88
6.0	                           43
5.5	                           23

anonymous · Answer

My problem is really the pH level, since it starts off with a large number and decreases. 
I made two graphs, but I am not sure which one is correct in this instance.

anonymous · Answer

The graphs are attached!

anonymous · Answer

@ganeshie8 @aaronq @dan815 @Compassionate 
Can you help please?

anonymous · Answer

Thank you so much for coming to help arronq!

anonymous · Answer

*aaronq
Sorry about that.

aaronq · Answer

I think both are equally valid as they display the same information. I would prefer to use the second one (with increasing pH to the right).

anonymous · Answer

Okay, thank you very much!

aaronq · Answer

no problem!