SOLUTION: A line passes through these points: (0, -7) and (-1,0). Please, could you help me write an equation for this line in slope-intercept form and show me how, step-by-step? Thank

Algebra ->  Equations -> SOLUTION: A line passes through these points: (0, -7) and (-1,0). Please, could you help me write an equation for this line in slope-intercept form and show me how, step-by-step? Thank      Log On


   

Question 433096: A line passes through these points: (0, -7) and (-1,0).
Please, could you help me write an equation for this line in slope-intercept form and show me how, step-by-step?
Thank you :)
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!


Hi

I. Using the point-slope formula, m+=%28y%5B2%5D+-+y%5B1%5D%29%2F%28x%5B2%5D+-+x%5B1%5D%29

(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