Given this linear system:
2x - 2y + 6z = 76
4x - y + 10z = 127
-x + 2y - 4z = -50
Which of the following is the augmented matrix for this system?

δabc ≅ δdcb by sas because

db ≅ ac . . given (side)

bc ≅ bc . . reflexive property (side)

∠dbc ≅ ∠ acb . . alternate interior angles where transversal bc crosses parallel lines bd and ac (included angle)

the answer is d

hope this

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