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Water is draining from a tank. The graph
of f(x), the amount of water in the tank,
in gallons, as a linear function of x, the
number of hours water has been draining,
passes through the points (20, 0) and
(0, 80). What is the rate of change in f(x)
with respect to x?

Respuesta :

kira2003
-4, to find the slope would be the equation: y2-y1/x2-x1. To plug it in 80-0/0-20. That would equal 80/-20 which simplifies down to -4.