Question

0. Statement(A) : If the points are collinear, then their slopes are equal. Statement(B) : If x 0, then the point (- x, y) lies in Q,, . A) Both A and B are true B) Both A and B are false C) A is true and B is false D) A is false and B is true​

Answer 1

Answer:

Given that three points are collinear, (a,o),(o,b) and (1,1)

Since the points are collinear, area of triangle formed by these points is equal to O.

2

1

[x

1

(y

2

−y

3

)+x

2

(y

3

−y

1

)+x

3

(y

1

−y

2

)]=0

2

1

[a[b−1]+0[1−0]+1(0−b)]=0

⇒ab−a−b=0

⇒a+b=ab

∴

a

1

+

b

1

=1