Plzz solve this question

Shryia read a 481 -page-long book cover to cover in a single session, at a constant rate. after reading for 1.5 hours, she had 403 pages left to read. how fast was shryia reading? pages per hour how long did it take her to read the entire book? hours plz i realy need this

Ab and bc form a right angle at point b. if a= (-3,-1) and b= (4,4) what is the equation of bc?

How do you determine if an ordered pair is a solution to a given equation?