Question

prove that points (1,1)(-2,7)and(3,-3)are collinear​

Answer 1

Answer:

A (1, 1)

B (-2, 7)

C (3, -3)

Slope of AB =

−2−1

7−1

=

−3

6

=−2

Slope of BC =

−2−3

7−(−3)

=

−5

10

=−2

Slope of AC =

1−3

1−(−3)

=

−2

4

=−2

Since slope of AB = Slope of BC = Slope of AC

Hence, points A,B,C are collinear.