Question

q.no9...............

Answer 1

Answer:

K = 4

Step-by-step explanation:

IF THE GIVEN ARE COLLINEAR THEN AREA ENCLOSE BY THEM IS ZERO 0

AREA ENCLOSED BY THEM = 1/2 (X1(Y2-Y3)+X2(Y3-Y2)+X3(Y1-Y2))

0 = I/2(  7(1-K)+   5(K-(-2)) + 3 (-2-1)) = 1/2(7-7K     +   5(k+2)     + 3(-3))

= 1/2(7 - 7K + 5K + 10 -9 ) = 1/2(-2K + 8)

0 = -2K+8(Multiply both sided with 2)

-8 = -2k

k = 4

Answer 2

hey mate here's your answer
hope it helps.....