hannaharsena
22.09.2019 •
Mathematics
Determine a radical function that starts at the point (-4,2) and goes to the right and decreases. the domain is all x> -4 and the range is all y< 2. explain how you determined you function.
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Ответ:
f(x) = -√(x-4) + 2
Step-by-step explanation:
(a) Start with the basic function: f(x) = √x.
This would be the top half of a horizontal parabola opening to the right (always positive).
(b) The range is y < 2. This includes negative numbers, so the function must be f(x) = -√x.
(c) The function starts at x = -4. We must shift it four units to the left. We do that by adding four units to x. The function must be f(x) = -√(x + 4). The domain is x > -4.
(d) The function starts at y = 2. We must shift it up two units. We do that by adding two units to y. The function must be f(x) = -√(x+4) + 2. The range is y < 2.
The figure below is the graph of f(x) = -√(x+4) + 2.
Ответ:
A: The data set is symmetrical.
Step-by-step explanation: