Graph Parabolas with Vertices at the Origin
Find the Focus $$x ^ { 2 } = - 8 y$$

question 33

Multiple Choice

Graph Parabolas with Vertices at the Origin
Find the focus and directrix of the parabola with the given equation.
- $$x ^ { 2 } = - 8 y$$

---

Definitions:

Expected Value

The long-term average or mean of random variables, taking into account all possible outcomes weighted by their probabilities.

Binomial Experiment

A statistical experiment that has exactly two possible outcomes for each trial and a fixed number of trials, where the probability of success is constant.

Variance

A measure of the spread or dispersion of a set of data points around the mean, indicating how much the data values differ from the average value.

Probability Distribution

A mathematical function that provides the probabilities of occurrence of different possible outcomes for an experiment.