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 #734008 by Boreal(15235)![]() ![]() You can put this solution on YOUR website! multiply everything by 8 \n" ); document.write( "2x+y=8k \n" ); document.write( "y=-2x+8k \n" ); document.write( "when y=0 (x-axis), 8k=2x and k=(1/4)x or x=4k \n" ); document.write( "when x=0 (y-axis) y=8k \n" ); document.write( "(4k, 0) and (0, 8k) \n" ); document.write( "When the third point is (0, 0), the base is 4k and the height is 8k \n" ); document.write( "The area is (1/2)32k^2=144 u^2 \n" ); document.write( "32k^2=288 \n" ); document.write( "k^2=9 and k=3 ANSWER \n" ); document.write( "y=-2x+24 \n" ); document.write( " |