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EmmaH
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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...:(
 2 years ago
 2 years ago
EmmaH Group Title
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...:(
 2 years ago
 2 years ago

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AriPotta Group TitleBest 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?
 2 years ago

EmmaH Group TitleBest ResponseYou've already chosen the best response.1
oh so its false?
 2 years ago

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

AriPotta Group TitleBest ResponseYou've already chosen the best response.1
does x = 9?
 2 years ago

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

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

EmmaH Group TitleBest ResponseYou've already chosen the best response.1
ok sso its false though?
 2 years ago

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

AriPotta Group TitleBest ResponseYou've already chosen the best response.1
or did you do the math
 2 years ago

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

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

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

elisichi Group TitleBest ResponseYou've already chosen the best response.0
EmmaH, 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.
 2 years ago

EmmaH Group TitleBest ResponseYou've already chosen the best response.1
yay :) =D :D =)
 2 years ago

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

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

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

EmmaH Group TitleBest ResponseYou've already chosen the best response.1
hu ....but thanks anyways
 2 years ago

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