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What is the solution to this system: y=2x+3 and -4x+2y=6 No Solutions Infinite Solutions (2,4) (3,5)

What is the solution to this system: y=2x+3 and -4x+2y=6 No Solutions Infinite Solutions (2,4) (3,5)
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4 votes
What is the solution to this system: y=2x+3 and -4x+2y=6

No Solutions
Infinite Solutions
(2,4)
(3,5)

User Heinistic
by
8.0k points

1 Answer

5 votes
-4x+2y = 6
-4x+2(2x+3) = 6 ... replace y with 2x+3
-4x+4x+6 = 6
0x+6 = 6
0+6 = 6
6 = 6

The last equation is always true regardless of what you pick for x. So there are infinitely many solutions.
User Thebunnyrules
by
8.8k points
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