document.write( "Question 226400: give the equation of the line that passes thru (0.9,0.3) and parallel to 3x+2y=6, leave your answer in y=mx+b form \n" ); document.write( "
Algebra.Com's Answer #168595 by Theo(13342) You can put this solution on YOUR website! slope-intercept form of the equation of a line is y = mx = b where m is the slope and b is the y-intercept.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "equation of 2x + 2y = 6 is the standard form of the equation of a line.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "That standard form is ax + by = c\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "You need to convert that equation to the slope intercept form first.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "2x + 2y = 6 is the original equation. \n" ); document.write( "subtract 2x from both sides of the equation to get: \n" ); document.write( "2y = -2x + 6 \n" ); document.write( "divide both sides of the equation by 2 to get: \n" ); document.write( "y = -x + 3\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "your original equation in slope-intercept form is:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "y = -x + 3\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "The slope of your original equation is -1.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Your equation will have the same slope.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "take the general slope-intercept form of:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "y = mx + b\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "and replace m with -1 to get:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "y = -x + b\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "now take your points of (x,y) = (.9,.3) and replace x and y in this equation with them.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "you get:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "y = -x + b becomes: \n" ); document.write( ".3 = -.9 + b \n" ); document.write( "add .9 from both sides of this equation to get: \n" ); document.write( ".3 + .9 = b \n" ); document.write( "simplify to get: \n" ); document.write( "b = 1.2\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "replace b in the slope-intercept form of your equation to get:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "y = -x + 1.2\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "That should be your equation.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Graph the original equation and your equation to show as follows:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "The horizontal line at y = .9 shows you that this occurs on your parallel line at around x = .3\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |