Answer:
B. 2
Step-by-step explanation:
The 1st pair is 457 and 98
457 + 98 = 555
The 2nd pair is 498 and 57
498 + 57 = 555
The classmate's only error is that the slope of the parallel line should be 3 aswell.
Parallel lines always have the same slope to each other
rise over run. the slope is -3 for 10.
B
Matches all specified equations.