To find avg downstream is 39/3 = 13 mph
upstream is 20/4 = 5mph
the average of the 2 is the still water speed which is 8 mph
The number is 6
3•6=18
18-8=10
Answer:
Step-by-step explanation:
Isolate the variable to find the solution set.
Y=-1/4x
you can tell because the line is going down if you read it from left to right, so it is a negative slope, and if you looks at 2 points where the line crosses, it goes down one, and to the right four
rise over run