perform the ff.

Indicate whether the given sets are relations or functions. 1. { (-1,5), (-6,9). (-7,0) } 2. { (-3,-4). (-4,-5). (-5,-6) } 3. { (-1,-3). (-1,-5), (-1,7) } Find the corresponding second members in each of the following functions. 4. f(x) = 2x + 1 f(0), f(-1), f(3) 5. g(r) = mr g(0), g(a),g(n)