document.write( "Question 1172039: Parabola;vertex at (-1,3);directrix x=-7 \n" ); document.write( "
Algebra.Com's Answer #796984 by josgarithmetic(39630) ![]() You can put this solution on YOUR website! What help do you want, exactly? \n" ); document.write( "The focus is on the other side of the vertex than the directrix. \n" ); document.write( "Distance from vertex to directrix is 10 units. This means focus is 10 units above (-1,3). You might begin by forming an equation like |