(05.03 MC)
Neil reads equal numbers of pages of a book every week. The graph shows the number of pages of the book left to read, y, after x weeks:
Neil's Book Reading
Number of 180
Pages Left 135
6
1 2 3 4 5
Number of Weeks
Which equation best models the relationship between x and y?
y = -5x + 45
y = -45x + 315
y = -5x + 225
y = -45x + 225