[Blindmath] Math graphs

[Catalina Acevedo]

Hello,
My name is Catalina. I am taking a math class and use Braille.
I have a difficult time with my class because the 3 chapters of my math textbook at my college are almost entirely graphic. I told the instructor I cannot do it since it is very hard to understand the graphs for this intermediate to advance algebra class. But they tell me they don’t know how to accommodate me. They use MyMathLab, which is not accessible for me.
Does anyone have any suggestions, please? How does a blind student navigate a textbook that has a lot of graphs? 
Thanks a lot,
Catalina