Determine whether the relation defines y as a function of x. Give the domain.y = 
A. Not a function; domain: (-?, -18) ? (-18, 0)
B. Not a function; domain: (-?, ?)
C. Function; domain: (-18, 18)
D. Function; domain: (-?, -18) ? (-18, ?)
Answer: D
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Solve the system of equations using Gaussian elimination or Gauss-Jordan elimination. x + y + z = 5 x - y + 5z = 254x + y + z = 14
A. (4, 3, -2) B. (3, -2, 4) C. (4, -2, 3) D. No solution
Insert either < or > to make a true statement.- 
A. < B. >
Find an equivalent equation in rectangular coordinates.r sin ? = 10
A. x = 10y B. y = 10 C. y = 10x D. x = 10
For the situation, classify each item as an undefined term, a defined term, a postulate, or a theorem. ? The game of Clue ? a. The pack of cards consists of three groups: Suspects, Rooms, and Weapons. b. playing board c. a die d. a weapon e. Miss Scarlet always plays first. ?
A. Item a is a postulate, b is an undefined term, c is an undefined term, d is an undefined term and e is a postulate. B. Item a is a postulate, b is an undefined term, c is an undefined term, d is a defined term and e is a postulate. C. Item a is a postulate, b is an undefined term, c is an undefined term, d is a defined term and e is a theorem. D. Item a is a theorem, b is an undefined term, c is an undefined term, d is a defined term and e is a postulate. E. Item a is a postulate, b is a postulate, c is an undefined term, d is a defined term and e is a postulate.