document.write( "Question 84787: I have real troubles with these. Please help.
\n" ); document.write( "Graph the inequality.
\n" ); document.write( " y is greater than or equal to 3x
\n" ); document.write( "
\n" ); document.write( "

Algebra.Com's Answer #61078 by bucky(2189)\"\" \"About 
You can put this solution on YOUR website!
Solve this by graphing the line y = 3x.
\n" ); document.write( ".
\n" ); document.write( "This line represents the points in which y = 3x. The points above this line are all the
\n" ); document.write( "points in which y is greater than 3x. You can identify these points by shading in the area
\n" ); document.write( "above the graphed line, and include the graphed line in the shading. Then you can say that
\n" ); document.write( "any point within the shaded area has a y value that will be greater than 3 times its
\n" ); document.write( "corresponding x value.
\n" ); document.write( ".
\n" ); document.write( "To help you visualize this, here's a picture of the graph y = 3x
\n" ); document.write( ".
\n" ); document.write( "\"graph%28300%2C300%2C-20%2C20%2C-20%2C20%2C3x%29\"
\n" ); document.write( ".
\n" ); document.write( "Imagine that starting on the line and going upward you shade the entire area above the
\n" ); document.write( "line.
\n" ); document.write( ".
\n" ); document.write( "Then if you put your pencil point on any place in the shaded area, the y value of that
\n" ); document.write( "point will be equal to or greater than 3 times its x value. For example, find the point
\n" ); document.write( "(-3, +1). That point is above the line. It has an x value of -3 and a y value of +1. For
\n" ); document.write( "that point 3 times x is -9. And you can see that with a value of +1 y is greater than the
\n" ); document.write( "3x value of -9. [+1 is greater than -9 by definition. A positive number is greater than
\n" ); document.write( "a negative number.] Another example, locate the point (1, 6). It also is in the shaded area
\n" ); document.write( "above the line. 3 times the x value of 1 is 3 and the y value of 6 is greater than 3. So
\n" ); document.write( "the point (1, 6) is in the solution set.
\n" ); document.write( ".
\n" ); document.write( "On the other hand, if you put your pencil point any place in the unshaded area below the
\n" ); document.write( "line, the y value of that point will be less that 3 times its corresponding x value.
\n" ); document.write( "As an example of this, find the point ( 2, 1). It is in the unshaded area below the graphed
\n" ); document.write( "line. Three times the x value of this point is 3*2 or 6. It is greater than the y value
\n" ); document.write( "of 1. For this point it is not true that y is greater than or equal to 3x because 1
\n" ); document.write( "is not greater than or equal to 6. So this point is not in the solution set to this problem.
\n" ); document.write( ".
\n" ); document.write( "Hopefully this will make some sense and eventually you'll see the concept.
\n" ); document.write( "
\n" );