desiree47
desiree47 desiree47
  • 07-10-2019
  • Mathematics
contestada

If y varies directly as x, and x = 48 when y = 6, find y
when x = 12.

Respuesta :

jimrgrant1 jimrgrant1
  • 07-10-2019

Answer:

y = 1.5

Step-by-step explanation:

Given y varies directly as x then the equation relating them is

y = kx ← k is the constant of variation

To find k use the condition x = 48 when y = 6

k = [tex]\frac{y}{x}[/tex] = [tex]\frac{6}{48}[/tex] = [tex]\frac{1}{8}[/tex]

y = [tex]\frac{1}{8}[/tex] x ← equation of variation

When x = 12, then

y = [tex]\frac{1}{8}[/tex] × 12 = 1.5

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