You can also look at a quadratic function in this light:
y = x2 + c, x ≠ 0
When you start with the parent function, c = 0. Therefore, the vertex (the highest or lowest point of the function) is located at (0,0).
Quick Translation Rules
- Add c, and the graph will shift up from the parent c units.
- Subtract c, and the graph will shift down from the parent c units.