document.write( "Question 1118633: Consider the line x/4 + y/8 = k where k is a positive number.
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document.write( "A) in terms of k, write down the coordinates of A and B, the points where the line meets the x and y axes respectively
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document.write( "B) the area of triangle AOB, where O is the origin, is 144 units squared. Find the value(s) of k \n" );
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Algebra.Com's Answer #734007 by t0hierry(194)![]() ![]() You can put this solution on YOUR website! x/4 + y/8 = k\r \n" ); document.write( "\n" ); document.write( "x=0 y = 8k B(0,8k) \n" ); document.write( "y=0 x = 4k A(4k.0)\r \n" ); document.write( "\n" ); document.write( "The area is half the product of OA and OB since these are perpendicular.\r \n" ); document.write( "\n" ); document.write( "So 1/2 32 k^2 = 144 \n" ); document.write( "or 16 k^2 = 144 \n" ); document.write( " 4 k = 12 \n" ); document.write( " k = 3 \n" ); document.write( " |