xoevelyynnnn
xoevelyynnnn xoevelyynnnn
  • 25-02-2021
  • Mathematics
contestada

If y varies directly with x and
y = 21 when x = 3, find y if x = 5.
First, find the direct variation equation,
y = [ ? ]x

Respuesta :

quincygrinstead quincygrinstead
  • 25-02-2021

Answer:

y = kx

21 = k*3

Now use that to find x as needed.

Or, since y/x is constant (k), you can find the new x without even finding k.

You want x such that

105/x = 21/3

Step-by-step explanation:

Answer Link

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