document.write( "Question 138571: Graph the inequality on a plane.
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document.write( "y > 4x\r
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document.write( "HELP please. Not sure how to do this this is new to me. \n" );
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Algebra.Com's Answer #101167 by vleith(2983)![]() ![]() ![]() You can put this solution on YOUR website! To graph inequalities, you first need to know the plot the equality. \r \n" ); document.write( "\n" ); document.write( "When you get ready to plot the equality, you need to decide if the drawing is made with a solid line or a dashed line. If the given equation contains an equal sign (=, >= or <=) then the drawing you make includes a solid line. In this case, the given equation does not include an = ign, so when we get ready to draw, we will use a dashed line.\r \n" ); document.write( "\n" ); document.write( "Now let's find what that drawing should be. \n" ); document.write( "Given : \n" ); document.write( "find \n" ); document.write( "x=0, yields y=0 \n" ); document.write( "x=1, yields y=4 we now have enough information to draw our line.\r \n" ); document.write( "\n" ); document.write( "1)Plot the points (0,0) and (1,4). \n" ); document.write( "2)Draw in the dashed line that includes those two points. Make sure to draw a line, not just the segment (the little piece) between the points.\r \n" ); document.write( "\n" ); document.write( "So now we have a dashed line rising left to right that cuts the plane into two halves. \n" ); document.write( "3)Look at the original inequality to decide which side of the line applies. In our problem, y is \"greater than\". So any y that lies 'above' the dashed line is a solution to the given inequality.\r \n" ); document.write( "\n" ); document.write( "This site does not have a nice way to graph inequalities. But if you look at the line below, make it dashed and then crosshatch the area above the line, you will have your graph.\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " \n" ); document.write( " |