Identify the values of a, b, and c in the functions.
1. y = 3x2 – 5x + 2
2. y = x2 + 2x - 3
4. y = -r2 + 4x – 8
5. y = -52 - x + 5
3. y = - 4x2 + x
6. y = x2 - 4