document.write( "Question 732415: Find the equation with the given properties and sketch the graph-passes through the point of intersection of 2x+y-3=0 and x-y-3=0 and through the point (4,3). I am a bit lost on this: I've solved for each y intercepts (y=-2x-3 and y=x-3). Do I take the intersection of these two (2,-1) and do something like y=-x+1? This was done by looking at the graph, not performing the math...which I am unable to figure out-help. \n" ); document.write( "
Algebra.Com's Answer #447841 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! Find the equation with the given properties and sketch the graph-passes through the point of intersection of 2x+y-3=0 and x-y-3=0 and through the point (4,3). I am a bit lost on this: I've solved for each y intercepts (y=-2x+3 and y=x-3). \n" ); document.write( "===== \n" ); document.write( "So: -2x+3 = x-3 \n" ); document.write( "3x = 6 \n" ); document.write( "x = 2 \n" ); document.write( "----- \n" ); document.write( "And: \n" ); document.write( "y = -2*2+3 = -1 \n" ); document.write( "================ \n" ); document.write( "You want the equation of the line thru (2,-1) and (4,3) \n" ); document.write( "----- \n" ); document.write( "slope = (3--1)/(4-2) = 4/2 = 2 \n" ); document.write( "====== \n" ); document.write( "Form: y = mx + b \n" ); document.write( "Solve for \"b\": \n" ); document.write( "3 = 2*4 + b \n" ); document.write( "b = -5 \n" ); document.write( "------ \n" ); document.write( "Equation: \n" ); document.write( "y = 2x-5 \n" ); document.write( "============== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "=============== \n" ); document.write( " |