Direct Variation
Given that y varies directly with x, and y = 12, when x = 9, find y when x = 7.
[tex]\underline{\mathcal{INFO:}}[/tex]
[tex]\boxed{\tt{Solution:}}[/tex]
- y = 12, x = 9
- y = kx
- 12 = 9k
- 12/9 = k
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- y = ?, x = 7, k = 12/9
- y = kx
- y = (7)(12/9)
- y = 28/3
[tex]\huge\boxed{\tt{ANSWER:}}[/tex]
