Answer:
range of f(x) = [-4, -2) ∪ [2, 8)
a+b+c+d = -4
Step-by-step explanation:
The graph is attached. The range is the vertical extent of the function. It is defined at f(0) = -4 and f(2) = 2.
The limits f(2-) and f(4-) are -2 and 8, respectively, so the graph has open circles there. These are the ends of the two half-open intervals that make up the range of the function.
The portion of the graph in the domain [4, 7) is included in the range [2, 8), so no special treatment is needed for that piece of the function.
hope this helps
1-use (x-y) = set the distance from focus to the point equal to the distance from directrix to the point
2- = square both sides and simplify equation
3- =choose a point on the parabola
4-4-
= =find the distance from the focus to the point of the parabola
5- =write the equation of the parabola
6- =find the distance from the point of the parabola to the directrix