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You can put this solution on YOUR website!
The idea behind graphing is that no matter where you are
\n" ); document.write( "on a plane surface, all you need is 2 numbers in order
\n" ); document.write( "to tell someone where you are.
\n" ); document.write( "Suppose you are on a flat plane with nothing in sight to
\n" ); document.write( "use as a description of where you are. Then you notice there are
\n" ); document.write( "2 straight lines intersecting at right angles that extend to
\n" ); document.write( "infinity.
\n" ); document.write( "Now all you have to do is measure your distance, (a) from one line
\n" ); document.write( "( call it the y-axis ), then measure your distance, (b) from the
\n" ); document.write( "other line ( call it the x-axis ). Now your position is:
\n" ); document.write( "( x[1] , y[1] ) = ( a , b )
\n" ); document.write( "where a and b are the measurements you made.
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\n" ); document.write( "Now your problem is to really understand what
\n" ); document.write( "means. I just told you that you needed 2 measurements to
\n" ); document.write( "locate a point on a plane, so this can't be a point.
\n" ); document.write( "What it is is a line, but this line always sees
\n" ); document.write( "it looks at the y-axis, but it can see anything when it looks at the x-axis.
\n" ); document.write( "So this is the line
\n" ); document.write( "and intersects the y-axis at the point (0,-1).
\n" ); document.write( "So if you pick a point at random on this line, you see a random point on the x-axis,
\n" ); document.write( "but you see
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\n" ); document.write( "Hope all this helps. It wasn't easy for me, and the
\n" ); document.write( "only way to fully get it is to just keep working
\n" ); document.write( "problems or comprehension exercises.\r
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