Video# Interpret proportionality constants (Full video)

## Supporting grades: 7

Khan Academy

Description: Sal interpret what the constant of proportionality means in a context. We can calculate the depth d of snow, in centimeters, that accumulates in Harper's yard during the first h hours of a snowstorm using the equation d is equal to five times h. So d is the depth of snow in centimeters, h is time that elapses in hours. How many hours does it take for one centimeter of snow to accumulate in Harper's yard? So we really just need to solve the equation one centimeter, when d is equal to one, what is h going to be?

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