Q2 of 110 Page 269

Use determinants to show that the following points are collinear.

A(3, 8), B(-4, 2) and C(10, 14)




Expanding with C3




=0


Since the area between the 3 points is 0, the three points lie in a straight line, i.e. they are collinear.


More from this chapter

All 110 →
1

Find the area of the triangle whose vertices are:

P(1, 1), Q(2, 7) and R(10, 8)


 2

Use determinants to show that the following points are collinear.

A(2, 3), B(-1, -2) and C(5, 8)


 2

Use determinants to show that the following points are collinear.

P(-2, 5), Q(-6, -7) and R(-5, -4)


 3

Find the value of k for which the
points A( 3, -2), B(k, 2) and C(8, 8) are collinear.