CoolToast
CoolToast
13-09-2016
Mathematics
contestada
A line passes through (1,1), (-2,4) and (6,n)
Respuesta :
apologiabiology
apologiabiology
19-09-2016
find sloope
for points (x1,y1) and (x2,y2)
slope=(y2-y1)/(x2-x1)
(1,1) and (-2,4)
slope=(4-1)/(-2-1)=3/-3=-1
so
for (1,1) and (6,n)
-1=(n-1)/(6-1)
-1=(n-1)/5
times both sides by 5
-5=n-1
add 1 to both sides
-4=n
the other pont is (6,-4)
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