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document.write( "There is a remarkable formula to calculate the distance from a given point to a given straight line in a coordinate plane.\r\n" );
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document.write( " Let the straight line in a coordinate plane is defined in terms of its linear equation \r\n" );
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document.write( " a*x + b*y + c = 0,\r\n" );
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document.write( " where \"a\", \"b\" and \"c\" are real numbers, and let P = (
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) be the point in the coordinate plane. \r\n" );
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document.write( " Then the distance from the point P to the straight line is equal to\r\n" );
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document.write( " d = 
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document.write( "Regarding this formula, see the lesson\r\n" );
document.write( " The distance from a point to a straight line in a coordinate plane\r\n" );
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document.write( "Your straight line is 2x + 3y - 6 = 0. The point is (4,-2)\r\n" );
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document.write( "Substitute the given data a= 2, b= 3, c= -6, = 4, = -2 into the formula to get the distance under the question\r\n" );
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document.write( " 
= 
= 
= 
= 1.1094 (approximately).\r\n" );
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document.write( "Answer. The distance is = 1.1094 (approximately).\r\n" );
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document.write( "Solved.\r
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