Q1 of 110 Page 269

Find the area of the triangle whose vertices are:
P(1, 1), Q(2, 7) and R(10, 8)

Operating R₁→ R₁-R₃, R₂→ R₂-R₃

Expanding with C₃

= -23.5 sq. units = 23.5 sq units

Find the area of the triangle whose vertices are:

A(-8, -2), B(-4, -6) and C(-1, 5)

1 D

Find the area of the triangle whose vertices are:

P(0, 0), Q(6, 0) and R(4, 3)

Use determinants to show that the following points are collinear.

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

Use determinants to show that the following points are collinear.

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

Find the area of the triangle whose vertices are:P(1, 1), Q(2, 7) and R(10, 8)