+0  
 
+8
859
3
avatar+961 

http://web2.0calc.com/questions/9x-3y-0_1

 Jan 8, 2015

Best Answer 

 #1
avatar+126653 
+13

Here's the answer to this one, shania....

9x+3y=0

-36x-12y=0

This set of equations wiill have infinite answers because they are actually the same........multiply the top equation by -4 and we have -36x - 12y  = 0 ......which is just the second equation in disguise.....

[ BTW,,,if you take Linear Algebra, you will discover that the determinant of this system = 0  ....which means that we would quickly be able to see that it has either infinite solutions, or no solutions, dependening upon the right hand side ]

 

 Jan 8, 2015
 #1
avatar+126653 
+13
Best Answer

Here's the answer to this one, shania....

9x+3y=0

-36x-12y=0

This set of equations wiill have infinite answers because they are actually the same........multiply the top equation by -4 and we have -36x - 12y  = 0 ......which is just the second equation in disguise.....

[ BTW,,,if you take Linear Algebra, you will discover that the determinant of this system = 0  ....which means that we would quickly be able to see that it has either infinite solutions, or no solutions, dependening upon the right hand side ]

 

CPhill Jan 8, 2015
 #2
avatar+961 
+8

well ok than thank

 Jan 8, 2015
 #3
avatar+118579 
+5

I have answered on the original question.  :)

 Jan 8, 2015

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