binette binette

27-09-2017
Mathematics

contestada

Solve each system by elimation 2x-3y=6 and 6x-9y=9

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texaschic101 texaschic101

27-09-2017

6x - 9y = 9....divide everything by 3
2x - 3y = 3
-3y = -2x + 3
y = 2/3x - 1....slope is 2/3, y int is -1

2x - 3y = 6
-3y = -2x + 6
y = 2/3x - 2...slope is 2/3, y int is -2

same slope, different y int means parallel lines means no solutions

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