document.write( "Question 29495: BY DRAWING THE GRAPH OF y=3x - 3 find where it crosses theY-axis and the gradient \n" ); document.write( "
Algebra.Com's Answer #16296 by AnlytcPhil(1806)\"\" \"About 
You can put this solution on YOUR website!
BY DRAWING THE GRAPH OF y = 3x-3 find where it crosses theY-axis and the\r\n" );
document.write( "gradient\r\n" );
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document.write( "Find the intercepts:\r\n" );
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document.write( "To draw the graph, plot some points say (0,-3), (1,0) and (2,3),\r\n" );
document.write( "connect them and get this graph:\r\n" );
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document.write( "\"+graph%28+200%2C+200%2C+-4%2C+4%2C+-4%2C+4%2C+3x-3%29+\" \r\n" );
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document.write( "Now, looking at the graph, answer \"How many units must you move your pencil\r\n" );
document.write( "point vertically along the y-axis from where the line crosses the y-axis\r\n" );
document.write( "(0,-3) until you get to the origin (0,0)?  Answer: +3 units upward,\r\n" );
document.write( "(up is +, down is -), so the \"rise\" is +3\r\n" );
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document.write( "Now answer \"How many units must you move your pencil point horizontally \r\n" );
document.write( "from the origin (0,0) to get to where the line crosses the x-axis at (1,0)?\r\n" );
document.write( "Answer: +1 unit right, (right is +, left is -), so the \"run\" is +1.\r\n" );
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document.write( "The gradient, or slope, is rise/run or +3/+1 = +3\r\n" );
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document.write( "Edwin\r\n" );
document.write( "AnlytcPhil@aol.com
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