document.write( "Question 1128838: A quadratic function has a minimum of -8 and an x-intercept of -5. Its axis of symmetry is x=-3. Find the y-intercept of this quadratic function. \n" ); document.write( "

Algebra.Com's Answer #745382 by MathTherapy(10556) $\"\"$ $\"About$

You can put this solution on YOUR website!

\n" ); document.write( "A quadratic function has a minimum of -8 and an x-intercept of -5. Its axis of symmetry is x=-3. Find the y-intercept of this quadratic function.
\n" ); document.write( "

Vertex form of a parabola: 
\n" );
document.write( " ------- Substituting (- 3, - 8) for (h, k), and (- 5, 0) for (x, y)
\n" );
document.write( "0 = 4a - 8
\n" );
document.write( "8 = 4a
\n" );
document.write( "
\n" );
document.write( "We now get: 
\n" );
document.write( " ------- Substituting 0 for x
\n" );
document.write( " \n" );
document.write( "

\n" );