True or False: The following relation is a function. Х Y 0 -3 -2 1 5 3 -2 Select one: O True O False
1 answer:
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Answer: D) Reflect over x-axis
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Explanation:
When we do this type of reflection, a point like (1,2) moves to (1,-2).
As another example, something like (5,-7) moves to (5,7)
The x coordinate stays the same but the y coordinate flips in sign from positive to negative, or vice versa.
We can say that as a general way to represent the transformation. Note how y = f(x), so when we make f(x) negative, then we're really making y negative.
If we apply this transformation to every point on f(x), then it will flip the f(x) curve over the horizontal x axis.
There's an example below in the graph. The point A(2,8) moves to B(2,-8) after applying that reflection rule.
The mean of the probability distribution is given by the expected value given by
The variance of the probability distribution is given by
The standard deviation is given by
The variance of the probability distribution is given by
The standard deviation is given by