find the values of x if the points A(x+1,2x),B(3x,2x+3),C(5x-1,5x) are collinear.
Coordinate geometry class 10
please answer fast with steps
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Answered by
6
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sachinanandharpeem9k:
bro 4th step - 15x not + 15x
5th step u put only +15 but actually it is -15x
you missed the x
oh sorry
I will not repeat this mistake
can u do it after correction and post it
no problem i completed this sum myself
Answered by
1
"Use the formula 0=1/2 [x1 (y2-y3) + x2(y3-y1) + x3(y1-y2)]
Area of these co-ordinates by using area formula by putting area = 0. For collinear area is equal to zero.
0 or -5/2i got this answer
Let the given 3 points be A(1,X),B(5,2),C(9,5) Consider 'B' Let (x1=5,y1=2) Similarly for A & C (x3=1,y3=X) & (x2=... ... 3x-4y-7=0
Now if we put the value of 'x' co -oridinate then we must get the value of 'y' co coordinate
"
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