Answer:
Step-by-step explanation:
Recall the vertex form of a quadratic equation:
Where (h,k) is the vertex.
We are told that the vertex is (0,0). Therefore:
Simplify:
So, to finish the equation, we need to find a.
We know that a point is (2,1). Thus, substitute 1 for f(x) and 2 for x:
Square:
Divide both sides by 4:
So, our a value is 1/4.
And we can thus complete our equation:
And we are done :)
36-18=18
ANSWER : C
good luck :)))
Answer:
d. all of the above
Step-by-step explanation:
K-means clustering is a term used to describe a technique of vector quantization, that attempts to partition "n" observations into "k" clusters whereby each observation refers to the cluster with the closest mean which represents a model of the cluster.
This implies that the K-means algorithm recognizes the "k" number of centroids, and then assigns every data point to the closest cluster while the centroids remain as small as possible.
Hence, the following is required of K-means clustering:
1. defined distance metric
2. number of clusters
3. initial guess of centroids
Therefore, in this case, the correct answer is option D: All of the above.
The answer is A,
In a function, an x value can only be paired with one y value.
However, a y value and have multiple different x values, for example when you graph a constant/horizontal line.
