Question

find the value of 'a' for which (a,1), (1,-1), (11,4)
are collinear points!
plz answer quickly!
I will mark as brainiest

Answer 1

Answer:

hey mate

here is your answer

area of triangle = 1/2[x1(y2-y3)+x2(y3-y1)+x3(y1-y2)]=0

[a(-1-4)+1(4-1)+11(1+1)]=o

[a(-5)+1(3)+11(2)]=0

-5a+3+22=0

25= 5a

a = 25/5

a= 5

hope it will help you