Question

An airplane is flying at an altitude of 4000 feet and descends at a rate of 200 feet per min. Determine whether the altitude is proportional to the # of min.
proportional means y = m x
linear means y = m x + b

because of the 4000 feet, this is of form
y = -200 x + 4000

which is linear but not proportional
Nxnsbsb
4,000 200
I need help
No

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