Answer:
slope is 7
Step-by-step explanation:
the rate of change is the slope
in the general equation y = mx + b
x and y are point coordinates (x,y)
b is the y intercept
m is the slope
this is the rate at which the points are changing essentially
a larger slope will produce a steeper line
a negative slope will produce a line pointed downward
a smaller slope will produce a flatter line
108 miles 3 hours = 36 mph upstream
108 miles 2 hours = 54 mph downstream
bv = boat velocity in still water
cv = current velocity
bv -cv = 36
bv +cv = 54 Adding both equations
2*bv = 90
boat velocity in still water = 45 mph
since bv + cv = 54
then we know the current velocity = 9 mph
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Answer:
the answer is 6:8 or 9:12
Step-by-step explanation:
