contestada

7. The value of x varies directly with y, and
when x = 5, y = 12. Write an equation to
represent the direct variation.

Respuesta :

Answer:

[tex]x = y - 7[/tex]

Step-by-step explanation:

1. Create an equation

Concept :

If x = 5, then subtracting 5 from both sides gives you x - 5 = 0. Do this to both variables

If x - 5 = 0 and y - 12 = 0, those two statements equal the same thing. So

[tex]x - 5 = y - 12[/tex]

2. Add 5 to both sides to isolate variable X

[tex]x = y - 7[/tex]

3. (Optional) Plug given values into new equation to check answers

[tex](5) = (12) - 7[/tex]

5 = 5 is a true statement

Answer:

Step-by-step explanation:

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