Question

For three points on a coordinate plane A(3,-7), B(-8,-1), C(9,4), find the area of the triangle formed by using those three points as vertices.

Answer 1

Answer:

Consider three points on the

x

y

−

coordinate plane

A

=

(

3

,

−

7

)

,

B

=

(

6

,

−

14

)

and

C

=

(

−

9

,

21

)

. Which of the following statements is/are true?

If we consider these three points to be the vertices of a triangle, then the area is

0

.

If we consider these three points to be the vertices of a triangle, then the area is

168

square units.

The points

A

,

B

and

C

are collinear.

In general, if the area of a triangle considering any three points be zero then the three points are collinear.

Step-by-step explanation:

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