Question 433096
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Hi
I. Using the point-slope formula, {{{m =(y[2] - y[1])/(x[2] - x[1])}}}
(0, -7) and 
(-1 ,0)  m = -7/1

II. 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. 
  y = -7x + b   |using ordered pair(-1,0) to find b
  0 = -7*-1 + b
  -7 = b
 y = -7x - 7