document.write( "Question 297166: What the fuck is the vertex of x^2-3x-21 \n" ); document.write( "
Algebra.Com's Answer #213990 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! It's on the line of symmetry. \n" ); document.write( "The line of symmetry is x = -b/2a = 3/2 \n" ); document.write( "Sub 3/2 for x to find y for the vertex: \n" ); document.write( "y = (3/2)^2 - 3*(3/2) - 21 = -93/4 \n" ); document.write( "--> (3/2,-93/4) \n" ); document.write( " \n" ); document.write( " |