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  ∠XWY = 58°

  ∠YXZ = 32°

  ∠WVZ = 116°

  ∠XWZ = 90°

  ∠XZY = 58°

Step-by-step explanation:

Triangle VWX is isosceles. Its base angles are (180° -64°)/2 = 58°.

  ∠XWY = 58°

The other corner angles are the complement of this.

  ∠YXZ = 32°

The obtuse angles at V are the supplement of the one marked

  ∠WVZ = 116°

We assume the figure is a rectangle, so each full corner angle is a right angle.

  ∠XWZ = 90°

The remaining angle of interest is congruent to the first angle of interest.

  ∠XZY = 58°

(-3, -4)

Step-by-step explanation:

The parabola shown here opens up.  The vertex is the lowest point of this graph.  The coordinates of the vertex are (-3, -4).