Transform each quadratic function into standard form. Identify the constants a, h and k.
1. y = x 2 + 2x – 5
2. y = x 2 – 4x + 6
3. y = x 2 – 8x + 3
4. y = x 2 – x + 16
5. y = x 2 – 6x – 5
6. y = x 2 + 10x – 13
7. y = x 2 – 6x + 5
8. y = x 2 – 2x + 3
9. y = x 2 – 3x + 16
10. y = x 2 – 18x – 9