document.write( "Question 534393: find the x-intercept and y-intercept\r
\n" );
document.write( "\n" );
document.write( "f(x)= -x^2+2x+63\r
\n" );
document.write( "\n" );
document.write( "I need the x coordinates of the intercepts
\n" );
document.write( "and
\n" );
document.write( "the y intercepts (0, ) \n" );
document.write( "
Algebra.Com's Answer #351485 by oberobic(2304)![]() ![]() ![]() You can put this solution on YOUR website! factor \n" ); document.write( ". \n" ); document.write( "-x^2 +2x +63 = 0 \n" ); document.write( ". \n" ); document.write( "(-x -7)(x -9) \n" ); document.write( ". \n" ); document.write( "Check using FOIL. \n" ); document.write( ". \n" ); document.write( "-x^2 +9x -7x +63 = -x^2 +2x +63 \n" ); document.write( ". \n" ); document.write( "Roots \n" ); document.write( ". \n" ); document.write( "x = -7 or 9 \n" ); document.write( ". \n" ); document.write( " \n" ); document.write( ". \n" ); document.write( "By inspection, you can see the y-intercept is (0,63). \n" ); document.write( "You also can find it by setting x=0 and solving the equation. \n" ); document.write( " |