document.write( "Question 670835: If a line intersects the x-axis at (a,0) and the y-axis at (0,b) at what point does it intersect the line y=x?
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Algebra.Com's Answer #417150 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! If a line intersects the x-axis at (a,0) and the y-axis at (0,b) at what point does it intersect the line y=x? \n" ); document.write( "------- \n" ); document.write( "Equation of the line thru (a,0) and (0,b) \n" ); document.write( "y/b + x/a = 1 \n" ); document.write( "y = x \n" ); document.write( "---- \n" ); document.write( "Solve for x and y: \n" ); document.write( "x/b + x/a = 1 \n" ); document.write( "---- \n" ); document.write( "ax + bx = ab \n" ); document.write( "(a+b)x = ab \n" ); document.write( "x = (ab)/(a+b) \n" ); document.write( "----- \n" ); document.write( "Since x = y, the point of intersection is (ab/(a+b) , ab/(a+b)) \n" ); document.write( "======================= \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "======================= \n" ); document.write( " \n" ); document.write( " |