meera is researching cruising speeds of different planes. which airplane has a greater cruising speed

Answer:
Step-by-step explanation:
Speed = rate = slope
Find slopes:
Table:
(10, 70)
(20, 140)
Speed = 7 km/min
Graph:
(6, 90) , (4, 60)
Speed = (90 - 60) / (6 - 4) = 30/2 = 15 km/min. the greater cruising speed