For what value of x will the points (x,-1)(2,1)and (4,5) lie on a kine
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A(x,-1) , B(2,1) , C(4,5)
Let ABC is a triangle
IF AREA =0, then ABC IS A LINE
then,
Area=1/2×[x(1-5)+2(5+1)+4(-1-1)=0
[-4x+12-8]=0×2=0
[-4x+4]=0
x=1
At X=1
ABC IS A LINE
Let ABC is a triangle
IF AREA =0, then ABC IS A LINE
then,
Area=1/2×[x(1-5)+2(5+1)+4(-1-1)=0
[-4x+12-8]=0×2=0
[-4x+4]=0
x=1
At X=1
ABC IS A LINE
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