SOLUTION: how do i find a missing coordinate when the slope is 7 and coordinates are (x,8) and (4,1)

Algebra ->  Linear-equations -> SOLUTION: how do i find a missing coordinate when the slope is 7 and coordinates are (x,8) and (4,1)      Log On


   

Question 460839: how do i find a missing coordinate when the slope is 7 and coordinates are (x,8) and (4,1)
Answer by rwm(914) About Me  (Show Source):
You can put this solution on YOUR website!
(8-1)/(x-1)=7
7/(x-1)=7
divide by 7
1/(x-1)=1
multiply by x-1
1=x-1
x=2