Question 82119
Y=mX+b WHERE X&Y ARE A SET OF POINTS THROUGH WHICH THE LINE PASSES. 
m=SLOPE & b=THE Y INTERCEPT. THUS:
y=4x-5 is the equation of this line.
{{{ graph( 300, 200, -6, 5, -10, 10, y = 4x -5) }}} (graph 300x200 pixels, x from -6 to 5, y from -10 to 10, y = 4x -5).