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anonymous
 one year ago
If y varies directly as x, and y=12 when x=4, find y when x=9.
anonymous
 one year ago
If y varies directly as x, and y=12 when x=4, find y when x=9.

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Direct variation, do you know the formula?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I am getting the wrong answer and only have one try left for this online course. could you help?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Substitute the given values.

Jhannybean
 one year ago
Best ResponseYou've already chosen the best response.2Start by solving for k k = y/x = 12/4 = ?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0i got 3=k and 3=x. says x is wrong

Jhannybean
 one year ago
Best ResponseYou've already chosen the best response.2One step at a time. k = 3. substitute this back in to your formula. y =3x Now when x = 9 what would y =? y = 3 * 9 = ?
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