Question 666612
  <pre><font face = "Tohoma" size = 3 color = "indigo"><b> 
Hi,
Using the standard slope-intercept form for an equation of a line y = mx + b
  where m is the slope and b the y-intercept.
Doesn't get simpler than that:
y = 3x+2   Yes.  m = 3 and the y=intercept is 2   Green
y= -4x+2    m = -4  and the y=intercept is 2      Blue
{{{drawing(300,300,   -6, 6, -6, 6,   grid(1),
circle(0, 2,0.3),
circle(-2/3, 0,0.3),
circle(.5, 0,0.3),
graph( 300, 300, -6, 6, -6, 6,0,3x+2,-4x+2))}}}