Answer:
area = (1/2)|Ax(By-Cy) +Bx(Cy-Ay) +Cx(Ay-By)|
= (1/2)|2(3-6) +3(6-1) +1(1-3)| = (1/2)|-6 +15 -2|
area = 7/2
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Answer:-3
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Answer:
1 is 13
2 is 13
3 is -7
4 is 7
Step-by-step explanation: