document.write( "Question 247641: solve the system by graphing
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document.write( "y=-9-2x
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document.write( "x+2y=-12 \n" );
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Algebra.Com's Answer #180594 by MisfortunateMonstrosity(1)![]() ![]() You can put this solution on YOUR website! First of all, you need to make both equations slope-intercept equations. \n" ); document.write( "Y=Mx+B \n" ); document.write( "y is the y, m is the slope, x is the x, and b is the y intercept (the number on the y line) \n" ); document.write( "What is equal to Y=-9-2X that would match the Slope Intercept form? \n" ); document.write( "Y=-2X-9. \n" ); document.write( "Same question for next equation. \n" ); document.write( "X+2Y=-12 \n" ); document.write( "2Y=-X-12. \n" ); document.write( "Y should be Y by itself, so: \n" ); document.write( "Y=-.5X-6 (You could just do 1/2 instead of .5) \n" ); document.write( "Now you graph both of the equations \n" ); document.write( "Y=-.5X-6 and Y=-2X-9 \n" ); document.write( "Use the Y intercepts; -6 and -9, put them both on the Y line in the graph. \n" ); document.write( "Then you use the slope to make the lines in the graph. \n" ); document.write( "For the first equation (Y=-.5-6), you have to graph 0,-6, and then you use the slope to make it into a line. Remember that -1/2 is rise/run, so you go up 1 time, and then since it is a negative you have to go left instead of right, so you go left twice. \n" ); document.write( "Do the same for the second equation: \n" ); document.write( "Graph (0,-9), and use the slope -2/1 to graph a line. \n" ); document.write( "Use a ruler for the lines, and keep drawing both lines until they touch. Where ever they touch is your answer. \n" ); document.write( "Try it, and if you did it correctly, (-2,-5) should be your answer. \n" ); document.write( " |