document.write( "Question 367357: Hi there, I have to find the quadratic equation that has vertex (-1, -3) and y-intercept (0, -1).\r
\n" ); document.write( "\n" ); document.write( "I plugged the vertex into the vertex form and got\r
\n" ); document.write( "\n" ); document.write( "\"a%28x+%2B+1%29%5E2+-+3\"\r
\n" ); document.write( "\n" ); document.write( "Then I plugged in the given y-intercept and solved for a\r
\n" ); document.write( "\n" ); document.write( "\"-1+=+a%280+%2B+1%29%5E2+-+3\"\r
\n" ); document.write( "\n" ); document.write( "\"a+=+2\"\r
\n" ); document.write( "\n" ); document.write( "So my vertex form will be \"2%28x%2B1%29%5E2-3\". Converting this to general form...\r
\n" ); document.write( "\n" ); document.write( "\"2%28x%5E2+%2B+2x+%2B+1%29+-+3\"\r
\n" ); document.write( "\n" ); document.write( "\"%282x%5E2+%2B+4x+%2B+2%29+-+3\"\r
\n" ); document.write( "\n" ); document.write( "\"2x%5E2+%2B+4x+-+1\"\r
\n" ); document.write( "\n" ); document.write( "Did I do this correctly? I've never seen a problem like this and couldn't find an example in the book. Thanks for your time and have a good evening :)
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Algebra.Com's Answer #261874 by jim_thompson5910(35256)\"\" \"About 
You can put this solution on YOUR website!
You have the correct answer. Good job.\r
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\n" ); document.write( "\n" ); document.write( "A simple graph will confirm your answer.\r
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\n" ); document.write( "\n" ); document.write( "Graph of \"2x%5E2+%2B+4x+-+1\"\r
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\n" ); document.write( "\n" ); document.write( "Notice how it has a vertex of (-1,-3) and a y-intercept of (0,-1)
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