document.write( "Question 144632: The vertex of a parabola is at the point (3, 2.5) and the point (4, 5.5) is on the parabola. What is the equation of the parabola?\r
\n" );
document.write( "\n" );
document.write( "... i know that the formula for parabola that is up or down is
\n" );
document.write( "y=a(x-h)exponent 2+v ... what im having truble finding is (a). \n" );
document.write( "
Algebra.Com's Answer #105381 by nabla(475)![]() ![]() ![]() You can put this solution on YOUR website! For our vertex, the equation's formula is: \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "(4, 5.5) is on the parabola. Put these values in our formula to find p. \n" ); document.write( " \n" ); document.write( "Thus \n" ); document.write( "\n" ); document.write( "And our equation becomes \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Another way to think about this is that the non-vertex point you are given is only 1 unit over to the right and it goes up 3 units from the vertex, so your \"a\" value would logically be 3 (1 increase of x results in 3 increase in y). \n" ); document.write( "I edited this because I made it more complicated than it needed to be prior to this current revision. Good day \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " |