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Graph the linear equation. Then use the graph to estimate how many solutions the equations share.

1. 3y+4x=16                        

    2x-y=18

2. y=-5x+6

    10x+2y=12

BOSEOK  Sep 17, 2017
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 #1
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1. 3y+4x=16                        

    2x-y=18

 

Here's the graph of this one :https://www.desmos.com/calculator/ca7j4iemr4

 

2. y = -5x+6

    10x+2y=12

 

Rearranging the first equation  as 5x + y = 6 

 

Multiplying by 2   on both sides

 

10x + 2y  = 12  produces the same equation as the second one.....thus, these are the same line....so we will have infinite solutions

 

 

cool cool cool

CPhill  Sep 17, 2017

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