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For the data in the table, does y vary directly with x? If it does, write an equation for the direct variation.
x 3 6 8
y 6 18 24
I dont get how to solve this
 one year ago
 one year ago
For the data in the table, does y vary directly with x? If it does, write an equation for the direct variation. x 3 6 8 y 6 18 24 I dont get how to solve this
 one year ago
 one year ago

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Sarah_Miller720Best ResponseYou've already chosen the best response.0
these are my choices yes; y = 2x yes; y = 3x yes; y = 4x no; y does not vary directly with x
 one year ago

JayDSBest ResponseYou've already chosen the best response.1
oh k, I know the answer then. Which one do u think it is?
 one year ago

JayDSBest ResponseYou've already chosen the best response.1
think of the same concept we applied to previous similar questions.
 one year ago

JayDSBest ResponseYou've already chosen the best response.1
use the point (3,6) substitute that into y=3x 6=3(3) 6=9 not correct.
 one year ago

JayDSBest ResponseYou've already chosen the best response.1
u have to try them for all points!!!
 one year ago

Sarah_Miller720Best ResponseYou've already chosen the best response.0
im confused lol
 one year ago

Sarah_Miller720Best ResponseYou've already chosen the best response.0
This is what i did with how you explained it above ^^ 6=3(3) this equals 9 18= 6(6) this equals 36 24= 8(8) this equals 64
 one year ago

JayDSBest ResponseYou've already chosen the best response.1
I'll give u another minute before explaining it.
 one year ago

JayDSBest ResponseYou've already chosen the best response.1
wait, u are confusing me.
 one year ago

Sarah_Miller720Best ResponseYou've already chosen the best response.0
im confused too
 one year ago

JayDSBest ResponseYou've already chosen the best response.1
ok, let me explain from the very start. (3,6) , (6,18) , (8,24) These are all the points/values given. we are also given y=2x, y=3x, y=4x or it doesn't vary. **Important: The rule must work for all points. lets test all three points for y=2x (3,6) (6,18) (8,24) y=2x y=2x y=2x 6=2(3) 18=2(6) 24=2(8) 6=6 18=12 24=16 y=2x is not the answer because only (3,6) works. lets try y=3x (3,6) (6,18) (8,24) y=3x y=3x y=3x 6=3(3) 18=3(6) 24=3(8) 6=9 18=18 24=24 y=3x is not the answer because only (6,18) and (8,24) work. same thing, u can try for y=4x it will not work. Therefore our answer is......?
 one year ago

Sarah_Miller720Best ResponseYou've already chosen the best response.0
no; y does not vary directly with x
 one year ago

Sarah_Miller720Best ResponseYou've already chosen the best response.0
thanks so much
 one year ago
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