Which ordered pair would form a proportional relationship with the point graphed below? 40
30
20
10
-80-60-40-290
20 40 60 80 X
-20
(60-20)
30
-40
0-10, 30)
(30.-15)
(-30, 10)
(80-30)

Amotorboat maintained a constant speed of 12 miles per hour relative to the water in going 45 miles upstream and then returning. the total time for the trip was 8.0 hours. use this information to find the speed of the current.