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31 votes
31 votes
Solving systems by elimination
Explain why it has no solution:
x+2y=8
x+2y=20

User Mateo Velenik
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2 Answers

13 votes
13 votes
It has no solution because it has the same slope. So, that means they are parallel lines.
User Martin Klinke
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2.7k points
18 votes
18 votes
Both x and y are equal, so you can’t eliminate either to find what one of the letters are equal to. As x + 2y = x + 2y, it implies that 8 = 20, meaning there is no solution^^ Hope that makes sense, lol
User Ales Teska
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2.5k points