document.write( "Question 143404: How do you know when an equation has infinitely
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document.write( "How do you know when an equation has no solution?\r
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Algebra.Com's Answer #104426 by nabla(475)![]() ![]() ![]() You can put this solution on YOUR website! Consider x+y=5. This implies y=5-x. What values of x can you plug in on the right side to get an answer? Infinitely many!\r \n" ); document.write( "\n" ); document.write( "Now, consider 0=2. Is this correct? No. This means there is no solution--- there is nothing you can do algebraically to make the relationship true without altering it. \r \n" ); document.write( "\n" ); document.write( "In general, infinitely many solutions means you can substitute any value for some variable(s) and get infinitely many answers. No solution applies when you can not find any solution to make a relationship true.\r \n" ); document.write( "\n" ); document.write( "I can explain further, particularly through the use of systems of equations. E-mail me at enabla@gmail.com if you're interested. \n" ); document.write( " |