Solving for Case 3:
y = -2(x + 4)^2 + 4
We have that the parent function is:
y = x^2
This parabola has a transformation as follows:
1. It has a vertical shift of four units upward.
2. It moves four units to the left (a horizontal shift to left in four units.)
3. It is vertically stretched by 2 (its y-coordinates) and it is followed by a reflection across the x-axis (it was multiplied by -2.) In the latter, the parabola is open downward.
(In this case last case we have (x, y) ---> (x, -2y).)
Solving for the Case 4:
| x - 3 | + 3
In this case, the parent function is:
y = | x |
This function has a transformation as follows:
1. It has a horizontal shift to the right of three units.
2. It has a vertical shift upwards of three units.