document.write( "Question 1118698: Consider the line x/4 + y/8 = k where k is a positive number.
\n" ); 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.
\n" ); document.write( "b) The area of triangle AOB, where O is the origin, is 144 units^2. Find the value(s) of k.
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Algebra.Com's Answer #734103 by stanbon(75887)\"\" \"About 
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Consider the line x/4 + y/8 = k where k is a positive number.
\n" ); 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.
\n" ); document.write( "----
\n" ); document.write( "Meets x axis means y = 0::
\n" ); document.write( "x/4 + 0/8 = k
\n" ); document.write( "x = 4k
\n" ); document.write( "------------
\n" ); document.write( "Meets y axis means x = 0::
\n" ); document.write( "0/4 + y/8 = k
\n" ); document.write( "y = 8k
\n" ); document.write( "-------------------
\n" ); document.write( "b) The area of triangle AOB, where O is the origin, is 144 units^2. Find the value(s) of k.
\n" ); document.write( "------
\n" ); document.write( "Plot the points:: A(4k,0) and B(0,8k) and O(0,0)
\n" ); document.write( "Notice the triangle AOB.
\n" ); document.write( "base = 4k
\n" ); document.write( "altitude = 8k
\n" ); document.write( "-----
\n" ); document.write( "Equation:
\n" ); document.write( "(1/2)(4k)(8k) = 144 u^2
\n" ); document.write( "16k^2 = 144 u^2
\n" ); document.write( "k^2 = 9 u^2
\n" ); document.write( "k = 3 units
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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