cassietruong cassietruong
  • 01-09-2019
  • Mathematics
contestada

If y varies directly with x and y = 6 and x = -3, find y when x = 4.

Respuesta :

Auspicious
Auspicious Auspicious
  • 01-09-2019

Ask questions in the comment section if you have questions. I'm happy to help! <3

Step-by-step explanation:

What the question is telling you is that x and y and proportional, almost like a ratio.

x : y

-3 : 6

Now we have to find y when x is four.

-3 : 6

    to

4 : y

Let's create a proportional equation...

(-3 / 6) = 4 / y

- 1 / 2 = 4 / y

What can we divide by four to create -1/2?

y = -8.

Answer Link
Vividerla
Vividerla Vividerla
  • 01-09-2019

Answer:

y = -8

Step-by-step explanation:

6/-3 = -2

4 * -2 = -8

y = -8

Answer Link

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