Yes thats a function, it passes the vertical line test!
Answer:
The speed of the boat in still water is 10 miles / hour
Step-by-step explanation:
The trip there, and the trip back are the same -- 30 miles
Let the rate of the boat = x
Let the rate of the water = y
30 = 2*(x + y)
30 = 6*(x - y)
Divide the top equation by 2
Divide the bottom equation by 6
15 = x + y
<u>5 = x - y </u> Add the equations together.
20 = 2x Divide by 2
20/2 = x
x = 10
When x=0 then y=3. Only B goes through (0,3).
Answer: B
Answer:
11/12
Step-by-step explanation:
1/3 = 4/12
5/4= 15/12
15 - 4 = 11