Dear Terri  ,
 
m = tanθ which is angle made by the line with x axis
c = intercept on y axis
 or u can take put x = some arbit value and then find y and plot the graph with diff arbitary value of x and y obtained by substituing x in the given eq..
 
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Anil Pannikar
IIT Bombay
						

							
Dear Terri,
The equation is given in the form y = mx + c, then the constant term,  which is c, is the y intercept, and the coefficient of x, which is m,  is the slope of the straight line. 
 
 The easiest way to graph such a line, is to plot the y-intercept first.   Then, write the slope m in the form of a fraction,The formula for slope is sometimes referred to as        "rise over run", because the fraction consists of the "rise" (the change in y,        going up or down) divided by the "run" (the change in x,        going from left to the right). like rise over run,  and from the y-intercept, count up (or down in case of -ve y) for the rise, over (right  or left) for the run, and put the next point.  Then connect the two  points and this is your line.
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Suryakanth –IITB