document.write( "Question 400039: Graph the function.
\n" ); document.write( " y = (x - 3)(x + 4)
\n" ); document.write( " \n" ); document.write( "

Algebra.Com's Answer #283258 by ewatrrr(24785) $\"\"$ $\"About$

You can put this solution on YOUR website!


\n" );
document.write( "Hi
\n" );
document.write( "Using the vertex form of a parabola,  where(h,k) is the vertex
\n" );
document.write( " y = (x - 3)(x + 4)
\n" );
document.write( " y = x^2 + x - 12  |expanding
\n" );
document.write( " y = (x +1/2)^2 - 1/4 - 12  |completing the square
\n" );
document.write( " y = (x + 1/2)^2 - 49/4   Vertex is Pt(-1/2,-49/4), line of symmetry x = -1/2
\n" );
document.write( "
\n" );
document.write( " \n" );
document.write( "

\n" );