Determine whether the relation is a function. Give the domain and range for the relation.{(9, -1), (-9, 7), (8, -9), (0, -9)}

A. not a function; domain: {-1, 7, -9}; range: {9, -9, 8, 0}
B. function; domain: {-1, 7, -9}; range: {9, -9, 8, 0}
C. function; domain: {9, -9, 8, 0}; range: {-1, 7, -9}
D. not a function; domain: {9, -9, 8, 0}; range: {-1, 7, -9}


Answer: C

Mathematics

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A. (, 0), (0, 5)

B. (, 0), (0, -5)

C. (-5, 0), (0, - )

D. (5, 0), (0, - )

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A.  ? [1, ?)
B.  ? 
C.
D.

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Graph the plane curve given by the parametric equations. Then find the equivalent rectangular equation.x = 2t - 1, y = t2 + 4; -4 ? t ? 4

A. y = - x + 30; -6 ? x ? 4

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C. y = x2 + 1; -6 ? x ? 4

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