document.write( "Question 944319: find the x-intercepts of the parabola with vertex (1,1) and y-intercept(0,-3)
\n" );
document.write( " \n" );
document.write( "
Algebra.Com's Answer #575776 by lwsshak3(11628)![]() ![]() ![]() You can put this solution on YOUR website! find the x-intercepts of the parabola with vertex (1,1) and y-intercept(0,-3) \n" ); document.write( "*** \n" ); document.write( "vertex form of equation for a parabola: y=A(x-h)^2+k, (h,k)=coordinates of vertex \n" ); document.write( "solving for A: \n" ); document.write( "-3=A(0-1)^2+1 \n" ); document.write( "A=-4 \n" ); document.write( "equation: y=-4(x-1)^2+1 \n" ); document.write( "x-intercepts \n" ); document.write( "set y=0 \n" ); document.write( "-4(x-1)^2+1=0 \n" ); document.write( "(x-1)^2=1/4 \n" ); document.write( "x-1=±√(1/4)=±1/2 \n" ); document.write( "x=1±1/2 \n" ); document.write( "x-intercepts: \n" ); document.write( "x=1/2 \n" ); document.write( "x=3/2 \n" ); document.write( " |