document.write( "Question 510119: y=3x-2\r
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document.write( "How do you get to the slope? is this right? \r
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document.write( "-2/.6 \r
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document.write( "if this is wrong, how do i get the right answer? \n" );
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Algebra.Com's Answer #341706 by oberobic(2304)![]() ![]() ![]() You can put this solution on YOUR website! y = mx + b is in slope-intercept form \n" ); document.write( ". \n" ); document.write( "m = slope \n" ); document.write( "m = change in y / change in x \n" ); document.write( "m = coefficient of 'x' in y = mx+b \n" ); document.write( ". \n" ); document.write( "b = y-intercept, which is the point (0, b) \n" ); document.write( ". \n" ); document.write( "so... \n" ); document.write( ". \n" ); document.write( "y = 3x -2 \n" ); document.write( ". \n" ); document.write( "slope = 3 \n" ); document.write( "A positive slope means the line slants up from the lower left to the upper right. \n" ); document.write( "With m=3, there is a change of 3 in 'y' for a change of 1 in 'x'. \n" ); document.write( "So the line is \"rising\" 3 times as fast as it is \"running.\" \n" ); document.write( ". \n" ); document.write( "y-intercept = (0,-2) \n" ); document.write( ". \n" ); document.write( "To find the x-intercept, simply set y=0 and solve for 'x'. \n" ); document.write( ". \n" ); document.write( "0 = 3x -2 \n" ); document.write( "add 2 to both sides \n" ); document.write( "2 = 3x \n" ); document.write( "so \n" ); document.write( "3x = 2 \n" ); document.write( "divide both sides by 3 \n" ); document.write( "x = 2/3 \n" ); document.write( ". \n" ); document.write( "x-intercept = (2/3, 0) \n" ); document.write( ". \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " |