Question

what is the area of triangle formed by the points
P(2, 1), Q(6, 1) and R(2, 4)
(a) 2 sq. units
(b) 4 sq. units
(c) 6 sq. units
(d) 8 sq. units​

Answer 1

Answer:

using the formula 1/2[x1(y2-y3) + x2(y3-y1) + x3(y1-y2)], we substitiue the values:

=1/2[2(1-4) + 6(4-1) + 2(1-1)]

=1/2[-6 + 18]

=1/2[12]

=6 square units

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Answer 2

Answer:

This is the answer.

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