Find the Center and Vertices of the Ellipse $\frac { x ^ { 2 } } { 81 } + \frac { y ^ { 2 } } { 36 } = 1$

question 103

Multiple Choice

Find the center and vertices of the ellipse. $\frac { x ^ { 2 } } { 81 } + \frac { y ^ { 2 } } { 36 } = 1$

• A)center: (9, 6) vertices: (-9, -6), (9, 6)
• B)center: (0, 0) vertices: (0, -9), (0, 9)
• C)center: (9, 0) vertices: (0, -6), (0, 6)
• D)center: (0, 0) vertices: (-6, 0), (6, 0)
• E)center: (0, 0) vertices: (-9, 0), (9, 0)

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Definitions:

Sample Mean

The average of all the values in a sample set of data.

Confidence Interval

A span of values, taken from sample statistics, seen as likely to encase the value of an unidentified population parameter.

Confidence Level

The probability, expressed as a percentage, that a parameter lies within a specified range of values (confidence interval).

Population Mean

The average value of a property in a population.