We use cookies to personalise content and advertisements and to analyse access to our website. Furthermore, our partners for online advertising receive pseudonymised information about your use of our website. cookie policy and privacy policy.
 
+0  
 
0
364
2
avatar+846 

x^2 - 9y^2 = 0 where x > 0 and y > 0

work out the ratio of x : y

 Apr 26, 2018
 #1
avatar+2341 
+2

I hope this helps you! This is just algebraic manipulation.
 

\(x^2-9y^2=0\)  
\(x^2=9y^2\)  
\(\frac{x^2}{y^2}=9\)  
\(\left(\frac{x}{y}\right)^2=9\)  
\(\frac{x}{y}=\frac{3}{1}\\ x:y=3:1\) Be careful! Do not take the negative root. "x" and "y" must both be positive. This is given information.
   
 Apr 26, 2018
 #2
avatar+846 
+1

Ok! thanks for the detailed explanation

YEEEEEET  Apr 27, 2018

10 Online Users