Question

what is the figurative language for the saying he kept his eyes on the rocky peaks that jutted into the sky like jagged sharks teeth

Answer 1

It is a simile, the words 'like' or 'as' indicate this. You know its a simile when two things are being compared by 'like' or 'as'

Answer 2

That is a simile. The word "like" is used to compare the rocky peaks with shark's teeth.