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For what ordered pair (a,b) are there infinite solutions (x,y) to the system 2ax+2y=b,5x+y=3.

 Oct 24, 2017
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2ax+2y=b 

5x+ y=  -3   ⇒  10x + 2y  = -6

 

So.....we will have infinite solutions when

 

2a  = 10    ⇒ a = 5

And

b = -6

 

So  { a, b}  = { 5, -6 }

 

 

cool cool cool

 Oct 24, 2017

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