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Barrelracing
 one year ago
suppose y varies directly with x. write a direct variation equation the relates x and y. then find the value of y when x =16
y=5 when x=2
Barrelracing
 one year ago
suppose y varies directly with x. write a direct variation equation the relates x and y. then find the value of y when x =16 y=5 when x=2

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rishavraj
 one year ago
Best ResponseYou've already chosen the best response.2For direct variation y = kx k is the propotionality constany

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2y = k*x y = k*2 ... replace x with 2 5 = k*2 ... replace y with 5 solve for k to get k = _________ (fill in the blank)

rishavraj
 one year ago
Best ResponseYou've already chosen the best response.2After getting k ...plug the value of k and x in the equation and get y

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2you should have found that k = 2.5 y = 2.5x when x = 16, y = 2.5*16 = 40 so you have the correct y value

Barrelracing
 one year ago
Best ResponseYou've already chosen the best response.0how do I find the direct variation that related x and y?

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2what do you mean?

Barrelracing
 one year ago
Best ResponseYou've already chosen the best response.0it says write a direct variation equation that relates x and y. this is still the same problem.

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2so it just wants the equation with x and y in it

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2the k will be replaced with the numeric value you found

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2So you can either say \[\Large y = \frac{5}{2}x\] or \[\Large y = 2.5x\]

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2I started with y = kx then replaced k with 5/2 or 2.5

Barrelracing
 one year ago
Best ResponseYou've already chosen the best response.0ohh ok I get it now thank you
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