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magoose magoose
  • 27-02-2016
  • Mathematics
Answered

if y is proportional to x and y = -15 when x = -20. what is the value of x and y?

Verified Answer :

Anonymous Anonymous
  • 27-02-2016

y = -15 when x = -20

Basically, you must solve for the constant of variation. 

y = kx

-15 = k(-20)
20/15 = k
k = 1.3 repeating 3

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