Question 445777
  <pre><font face = "Tohoma" size = 4 color = "indigo"><b> 
Hi,
Using the point-slope formula, {{{m =(y[2] - y[1])/(x[2] - x[1])}}}
(-4,3) and 
(-2,1)  m = 2/-2 = -1
Note: the standard slope-intercept form for an equation of a line y = mx + b  
where m is the slope and b the y-intercept.    
 y = -x + b
 1 = -1*-2 + b
 -1 = b
 y = -x -1
{{{drawing(300,300, -20, 20, -20, 20,   grid(1),
circle(-4, 3,0.6),
circle(-2, 1,0.6),
graph(300,300,-20, 20, -20, 20, 0,-x-1))}}}