dillyesco7
dillyesco7 dillyesco7
  • 13-04-2021
  • Mathematics
contestada


If y varies inversely as x, and x= 8 when y = 4, find y when x = 2

Respuesta :

milesandautumn
milesandautumn milesandautumn
  • 13-04-2021

Answer:

I'm pretty sure that it is 8 but I'm not entirely sure

Answer Link
rococo908
rococo908 rococo908
  • 13-04-2021

Answer:

y = 16

Step-by-step explanation:

Use the inverse variation equation, y = [tex]\frac{k}{x}[/tex]

Plug in 8 as x and 4 as y, then solve for k

y = [tex]\frac{k}{x}[/tex]

4 = [tex]\frac{k}{8}[/tex]

32 = k

So, k is 32.

The equation is y = [tex]\frac{32}{x}[/tex]

Plug in 2 as x and solve for y

y = [tex]\frac{32}{x}[/tex]

y = [tex]\frac{32}{2}[/tex]

y = 16

So, when x = 2, y = 16

Answer Link

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