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EmmaH
 3 years ago
True or False? Y varies directly with x and y = 9 when x = 3. When y = 27, the value of x is 9. someone PLEASE explain...:(
EmmaH
 3 years ago
True or False? Y varies directly with x and y = 9 when x = 3. When y = 27, the value of x is 9. someone PLEASE explain...:(

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AriPotta
 3 years ago
Best ResponseYou've already chosen the best response.1"y varies directly with x" is y = kx. we have to find out what k is. so we substitute 9 for y and 3 for x. 9 = 3k. can you tell me what k equals?

AriPotta
 3 years ago
Best ResponseYou've already chosen the best response.1yep. so now we can substitute 3 for k and 27 for y to see if x equals 9. 27 = 3x

EmmaH
 3 years ago
Best ResponseYou've already chosen the best response.1no x=3 it says so in the prob

AriPotta
 3 years ago
Best ResponseYou've already chosen the best response.1no, that says when x = 3, y = 9. y and x can be any number. k is the only variable that is constant

AriPotta
 3 years ago
Best ResponseYou've already chosen the best response.1why do you think it's false? are you just guessing? :/

AriPotta
 3 years ago
Best ResponseYou've already chosen the best response.1or did you do the math

EmmaH
 3 years ago
Best ResponseYou've already chosen the best response.1i did the math 9=3k so 9/3=3k/3 k=3 right o9r am i totaolly off?

AriPotta
 3 years ago
Best ResponseYou've already chosen the best response.1yea, k = 3, but we're trying to find out what x equals when y = 27

AriPotta
 3 years ago
Best ResponseYou've already chosen the best response.1yes! which is not 9. so it's false. good job :)

elisichi
 3 years ago
Best ResponseYou've already chosen the best response.0EmmaH, k=3. So, now you substitute it in to check what x is when y=27 27=(3)x x=9 Therefore, it is false.

elisichi
 3 years ago
Best ResponseYou've already chosen the best response.0Sorry I just realised I came in a little too late

EmmaH
 3 years ago
Best ResponseYou've already chosen the best response.1thanks guys...wait are you both guys right?

elisichi
 3 years ago
Best ResponseYou've already chosen the best response.0I'm a girl :D But close enough!

EmmaH
 3 years ago
Best ResponseYou've already chosen the best response.1hu ....but thanks anyways

EmmaH
 3 years ago
Best ResponseYou've already chosen the best response.1lolo thats a way of saying it :)
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