document.write( "Question 866114: the vertex of a parabola is it (-4,-3). If one x-intercept is -11, what is the other x-intercept \n" ); document.write( "
Algebra.Com's Answer #522083 by Edwin McCravy(20055)\"\" \"About 
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the vertex of a parabola is it (-4,-3). If one x-intercept is -11, what is the other x-intercept
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document.write( "We plot those two points\r\n" );
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document.write( "The parabola's axis of symmetry is a vertical line thgrough the vertex,\r\n" );
document.write( "so we draw in the axis of symmetry (in green)\r\n" );
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document.write( "Now we sketch the parabola\r\n" );
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document.write( "We can see by the symmetry of a parabola that the other x-intercept\r\n" );
document.write( "must be the same distance on the right of -4 (since that's the \r\n" );
document.write( "x-coordinate of the vertex), as (-11,0) is to the left of -4.  Since\r\n" );
document.write( "-11 is 7 units to the left of -4, the x-intercept must be 7 units to\r\n" );
document.write( "the right of -4 on the x-axis.  And -4+7 = 3.  So the other x-intercept\r\n" );
document.write( "is (3,0),\r\n" );
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document.write( "Edwin
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