When #x = 12, y=8#. What is #x# when #y= 12#?

2 Answers
Sep 6, 2017

Read below....

Explanation:

*There is no equation connecting #x and y#, hence your required answer is false..

*On the other hand, since when #x = 12, y = 8#, the when #y = 12, x = 8# based on Quadratic format..

Because it doesn't matter if #x and y# equals to different digits, as long as they are both co-factors, it will still lead to same equation..

Sep 6, 2017

#x=18#

Explanation:

#"assuming the variables are in "color(blue)"direct variation"#

#"that is "y=kxlarr" k is constant of variation"#

#"to find k use the given condition"#

#"when "x=12,y=8#

#y=kxrArrk=y/x=8/12=2/3#

#"equation is " color(red)(bar(ul(|color(white)(2/2)color(black)(y=2/3x)color(white)(2/2)|)))#

#"when "y=12#

#rArrx=(3y)/2=(3xx12)/3=18#