Answer:
y = 3x + 6
Step-by-step explanation:
y2 - y1 / x2 - x1
9 - (-6) / 1 - (-4)
15/5
= 3
y = 3x + b
9 = 3(1) + b
9 = 3 + b
6 = b
Answer:
72 hours
Step-by-step explanation:
Rate =Distance / Time
Rate=400/18=22.222
Time=Distance/ Rate
Time= (1600 x 18)/400 = 72hours