document.write( "Question 775434: Is there a relationship between the sign (positive or negative) of the slope of a line and the angle the line makes with the x-axis?
\n" ); document.write( "For example,if you graph y = 3x+5,versus the graph of y = -3x+5
\n" ); document.write( "

Algebra.Com's Answer #472856 by MathLover1(20850)\"\" \"About 
You can put this solution on YOUR website!
Yes! Most definitely.\r
\n" ); document.write( "\n" ); document.write( "The \"angle\" the line makes with \"x-axis\" is given by arctan or tan^-1 of the slope.\r
\n" ); document.write( "\n" ); document.write( "For example if the slope is \"1\" then the angle to the \"x-axis\" is \"arctan+%281%29+=+45\" degrees\r
\n" ); document.write( "\n" ); document.write( "Size of the angle formed with the \"x-axis\" is related to the sign of the slope.
\n" ); document.write( "Lines with \"positive\"\"+slopes\" slant to the \"right\", thus a \"smaller\" angle is formed with the \"x-axis\".
\n" ); document.write( "Lines with \"negative\" \"slopes\" slant to the \"left\", thus a \"larger\" angle is formed with the \"x-axis\".\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"y+=+3x%2B5\" (Green Line)\r
\n" ); document.write( "\n" ); document.write( "\"y+=+-3x%2B5\" (Blue Line)\r
\n" ); document.write( "\n" ); document.write( "\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "
\n" ); document.write( "
\n" );