Sebastian was in a hotel lobby and took the elevator up 7 floors to his room. Then he took the elevator down 9 floors to the par
king garage. He described his movement with the expression below. 9 + (–7) What is Sebastian’s error? a.Sebastian should have used –9 and 7.
b.Sebastian should have started at zero before adding –7.
c.Sebastian should have switched the two addends and written –7 + 9.
d.Sebastian should have used 0 and –9.
It is not parallel. The fact that there is more space between the lines on one side than the other (mk is shorter than nL) shows that the lines must be angled differently, and thus, would eventually intersect.
