document.write( "Question 162827: how would you graph
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document.write( "x+5=10
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document.write( "3x+4y<12
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document.write( "x+2y=4
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document.write( "y>-3, x>6
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document.write( "y=8/3+4 \n" );
document.write( "
Algebra.Com's Answer #121443 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! how would you graph \n" ); document.write( "x+5=10 \n" ); document.write( "3x+4y<12 \n" ); document.write( "x+2y=4 \n" ); document.write( "y>-3, x>6 \n" ); document.write( "y=8/3+4 \n" ); document.write( "------------------ \n" ); document.write( "These are all 1st order equations (2 are inequalities), which means the graphs are linear, a straight line. All you need is 2 points, then draw a straight line thru them. \n" ); document.write( "----------- \n" ); document.write( "x+5 = 10 \n" ); document.write( "x = 5 \n" ); document.write( "No matter what the value of y, x is 5. Pick 2 points, say (5,0) and (5,5). Then draw a straight line thru them. It will be parallel to the y-axis. \n" ); document.write( "----------------- \n" ); document.write( "x+2y = 4 \n" ); document.write( "Find 2 points. The easiest way is to set x = 0 and solve for y, the set y = 0 and solve for x. \n" ); document.write( "0 + 2y = 4 \n" ); document.write( "y = 2, so the point is (0,2) \n" ); document.write( "x +2*0 = 4 \n" ); document.write( "x = 4, so the point is (4,0) \n" ); document.write( "Connect them with a straight line. \n" ); document.write( "-------------- \n" ); document.write( "y=8/3+4 \n" ); document.write( "y = 8/3 + 12/3 \n" ); document.write( "y = 20/3 \n" ); document.write( "Regardless of the value of x, y = 20/3 \n" ); document.write( "This is a line parallel to the x-axis 20/3 units above it. \n" ); document.write( "--------------------- \n" ); document.write( "3x+4y<12 \n" ); document.write( "To graph an inequality, solve for the 2 points with an equal sign first. \n" ); document.write( "Find 2 points. The easiest way is to set x = 0 and solve for y, the set y = 0 and solve for x. \n" ); document.write( "3*0 + 4y = 12 \n" ); document.write( "y = 3, so the point is (0,3) \n" ); document.write( "3x + 4*0 = 12 \n" ); document.write( "x = 3, so the point is (3,0) \n" ); document.write( "Connect the 2 points with a straight line. This is a line with a slope of -1, that is, y is decreasing as x increases. \n" ); document.write( "The area \"below\" the line is the area where 3x+4y is less than 12. The line is where it is equal, and above it it is greater than. \n" ); document.write( "------------------------- \n" ); document.write( "y>-3, x>6 \n" ); document.write( "Locate the point (6,-3). The area above and to the right of the point satisfies the 2 conditions.\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |