document.write( "Question 522737: how do i find the equation of the parabola, y=ax^2+bx+c, that passes through the following three points : (-2,40),(1,7),(3,15)? \n" ); document.write( "
Algebra.Com's Answer #346976 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! Another method, using determinants: \n" ); document.write( "---------- \n" ); document.write( " Parabola \n" ); document.write( " x y x^2 Coeff \n" ); document.write( "Point 1 -2 40 4 1 \n" ); document.write( "Point 2 1 7 1 1 \n" ); document.write( "Point 3 3 15 9 1 \n" ); document.write( "-------------- \n" ); document.write( "I have an Excel sheet that does these. \n" ); document.write( "--> y = 3x^2 - 8x + 12 \n" ); document.write( "--------------------------- \n" ); document.write( "That was no help at all, except for confirming the solution. \n" ); document.write( " \n" ); document.write( " |