document.write( "Question 837691: how do you plot two points on a graph using the equation y=mx+c where m is the slope or gradient and c is the y-intercept, and there are y and x axis, and the eqaution to be plotted is y=-x-2?
\n" ); document.write( "
\n" ); document.write( "

Algebra.Com's Answer #504708 by Theo(13342)\"\" \"About 
You can put this solution on YOUR website!
there are several ways to do it.
\n" ); document.write( "one of the easiest ways is to find the x and y intercepts.
\n" ); document.write( "you can find them in the following manner.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "the equation is y = -x - 2\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "when x = 0, the equation becomes:
\n" ); document.write( "y = -2
\n" ); document.write( "that's your y-intercept.
\n" ); document.write( "the coordinates of that point are (0,-2).\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "when y = 0, the equation becomes:
\n" ); document.write( "0 = -x - 2
\n" ); document.write( "add 2 to both sides of this equation to get:
\n" ); document.write( "2 = -x
\n" ); document.write( "multiply both sides of this equation by -1 to get:
\n" ); document.write( "x = -2
\n" ); document.write( "that's your x-intercept.
\n" ); document.write( "the coordinates of that point are (-2,0).\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "what you have just done is plot 2 points.
\n" ); document.write( "draw a straight line between them and that's the graph of your line.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "that graph looks like this:
\n" ); document.write( "\"graph%28600%2C600%2C-5%2C5%2C-5%2C5%2C-x-2%29\"\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "you can see that the x-intercept is at (-2,0) and that the y-intercept is at (0,-2).\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "the x-intercept is the point where the graph crosses the x-axis.
\n" ); document.write( "the y-intercept is the point where the graph crosses the y-axis.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "there are other ways to graph the equation.
\n" ); document.write( "this is just one of them.\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "
\n" ); document.write( "
\n" );