The Graph B Â best represents a parabola , Option D has the correct data points and so is the right answer.
A function is a mathematical way of representing relation between two variables.
The function given is
y = 2x²
For x = - 2, y = -2(- 2)² = -8
For x = - 1, y = -2(- 1)² = -2
For x = 0, y = -2(0)² = 0
For x = 1, y = -2(1)² = -2
For x = 2, y = -2(2)² = -8
the  table of x-y will be:
x  - 2   - 1   0   1   2
y   -8   -2  0  -2  -8
The graph is attached with the answer.
The parabola opens downward and has the data points as mentioned above .
Therefore Option D is the correct answer.
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