shockerblock
shockerblock shockerblock
  • 07-02-2019
  • Mathematics
contestada

If y varies directly with x, Write an equation relating x and y when y = -30 and x = 6.


6x = -30y

y = 5x

y = -5x

-6x = -30y

Respuesta :

calculista
calculista calculista
  • 16-02-2019

Answer:

[tex]y=-5x[/tex]

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form [tex]y/x=k[/tex] or [tex]y=kx[/tex]

so

For [tex]x=6,y=-30[/tex]

substitute

[tex]y/x=k[/tex]------> [tex]k=-30/6=-5[/tex]

therefore

[tex]y=-5x[/tex]

Answer Link
annabanana08050
annabanana08050 annabanana08050
  • 05-03-2019

Answer:

C.) Y = -5x

Step-by-step explanation:

5 x 6 = 30

So...

if x = 6 and y = -30

-30 would have to equal -30

-5 x 6 = -30

So...

Y = -5x is the correct option

Answer Link

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