Question

Hey helping hand, genius, ace,ambitious ,virtuous ,expert.


please answer this question


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Answer 1

A(x,Y) B(1,2) C(2,1)

Area = |1/2 ( x ( 2 -1) + 1( 1 -Y) + 2( Y - 2) )| = 6

x + 1 - y + 2 y - 4 = +-12

take positive sign

x+ y -3 = 12

x+ y = 15

take negative sign

x+ y -3 = -12

x + y = -9

x+ y +9 = 0