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If x2 – 6xy + 9y2 = 0, then the value of y : x is:

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If x2 – 6xy + 9y2 = 0, then the value of y : x is:


1). 3 : 1
2). 1 : 3
3). 3 : 2 
4). 2 : 3


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1 answers

2 vote
Answered by on | Votes 2 |

x2 – 6xy + 9y2 = 0

Dividing whole equation by y2

(x/y)2 – 6x/y + 9 = 0

Let x/y be d

d2 – 6d + 9 = 0

d = 3

x ? y = 3 ? 1

y ? x = 1 ? 3

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