document.write( "Question 18492: Hello again!\r
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document.write( "I really need help with this problem. Could someone kindly help me?
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document.write( "The class is working with Quadratic functions and graphs – I'm supposed to find the vertex and intercepts , then sketch its graph. l really need help.\r
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document.write( "y= -x^2 + 2x + 3\r
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document.write( "This is a head-scratcher for me. Thanks for all of the help. It is appreciated. \n" );
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Algebra.Com's Answer #8881 by Alwayscheerful(414)![]() ![]() ![]() You can put this solution on YOUR website! Hi \n" ); document.write( "I reccomend finding the vertex first, then the intercepts, then finally graph it. You can find the vertex using vertex form: \n" ); document.write( " \n" ); document.write( "(h,k) is your vertex \n" ); document.write( "If you don't like doing a lot of math, here is a short cut \n" ); document.write( " \n" ); document.write( "Standard form for quadratic equations: \n" ); document.write( "That gives you your X value of the vertex. \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "To find the Y value, plug 1 into the X value in the original equation \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "Your vertex is (1,6) \n" ); document.write( "X and Y-INTERCEPTS \n" ); document.write( "The Y-intercept is always the number without a variable. So, in this question it is 3 \n" ); document.write( "There will be 2 X-intercepts. \n" ); document.write( "I will factor this equation to find them. \n" ); document.write( " \n" ); document.write( "To make this equation 0, the X must be -1 or 3 \n" ); document.write( "So you X-intercepts are (-1,0) and (3,0)\r \n" ); document.write( "\n" ); document.write( "GRAPH \n" ); document.write( "First graph the vertex (1,6) \n" ); document.write( "Graph the X-Intercepts (-1,0) and (3,0) \n" ); document.write( "Graph the Y-Intercept (0,3) \n" ); document.write( "Your graph should look like this: \n" ); document.write( " \n" ); document.write( "Hope this helps! \n" ); document.write( " |