![\"\"](\"/images/stars/stars-08.gif\")
You can put this solution on YOUR website!
You can draw a line knowing only the slope, you must also have another piece of information that gives you a starting point. For example, a line is a slope of -3 that crosses (0, 0) is different then the line with slope -3 that crosses (1, 1).
\n" ); document.write( "
\n" ); document.write( "So let's assume our line crosses (0, 0). To draw this line, we have to understand something about the slope. A common description is the slope is the rise over the run, in other words a slope of 1/2 means you move up 1 space and to the right 2 spaces.
\n" ); document.write( "
\n" ); document.write( "Well this is fine when the slope is a positive fraction, but what about a negative whole number? Well, there are two points to keep in mind. First, a whole number is a fraction, for example, the whole number 3 is the fraction 3/1. So, a slope of three means move up three spaces and to the right 1 space. The negative means you can either move down then to the right, or you can move up and to the left. The slope -3 means move down three spaces and one to the right or move up three spaces and one to the left.
\n" ); document.write( "
\n" ); document.write( "So how does this help in drawing the graph. Well, if you start at (0, 0), you you can find a point by moving down 3 and one to the right this will land you at (1, -3), you can do this again to get to (2, -6) and so on. You can also, starting at (0, 0) move up three and to the left one, which brings you to (-1, 3). \n" ); document.write( "