SOLUTION: write the equation of the line (2,11) and (-1,-1). Thank you

Algebra ->  Linear-equations -> SOLUTION: write the equation of the line (2,11) and (-1,-1). Thank you      Log On


   

Question 480528: write the equation of the line (2,11) and (-1,-1). Thank you
Answer by Tatiana_Stebko(1539) About Me  (Show Source):
You can put this solution on YOUR website!
%28y-y%5B1%5D%29%2F%28y%5B2%5D-y%5B1%5D%29=%28x-x%5B1%5D%29%2F%28x%5B2%5D-x%5B1%5D%29
Points (2,11) and (-1,-1)
substitute x%5B1%5D=2, y%5B1%5D=11, x%5B2%5D=-1, y%5B2%5D=-1
%28y-11%29%2F%28-1-11%29=%28x-2%29%2F%28-1-2%29
%28y-11%29%2F-12=%28x-2%29%2F-3multiply by (-12)
y-11=4%28x-2%29
y-11=4x-8
y=4x-8%2B11
y=4x%2B3