tylerjette1221
tylerjette1221 tylerjette1221
  • 22-02-2019
  • Mathematics
contestada

What is the constant of proportionality in the equation x/y =2/9

A:2/9

B:2

C:9/2

D:9

Respuesta :

aasiyahi
aasiyahi aasiyahi
  • 22-02-2019

Answer:

C.9/2

Step-by-step explanation:

equation for inverse proportion y= k/x

y=9/x

⇒constant of proportionality  =k=9

Answer Link
carlosego
carlosego carlosego
  • 22-02-2019

Answer: C) 9/2

Step-by-step explanation:

Yoy have the following direct proportion:

[tex]x=ky[/tex], where:

k is the constant of proportionality.

When you solve for y, you obtain:

[tex]y=x/k[/tex]

The problem gives you the porportion x/y=2/9

Therefore when you solve for y you obtain:

 [tex]y=x*9/2[/tex]

Then:

 [tex]k=9/2[/tex]  

OPTION C

Answer Link

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