Find the Focus, Directrix, and Focal Diameter of the Parabola $y ^ { 2 } = 8 x$

question 40

Essay

Find the focus, directrix, and focal diameter of the parabola $y ^ { 2 } = 8 x$ , and sketch its graph.

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Definitions:

Reliability

The degree to which an assessment tool produces stable and consistent results over multiple administrations or applications under the same conditions.

Validity

The extent to which a concept, conclusion, or measurement is well-founded and likely corresponds accurately to the real world.

100% Reliable

An absolute level of dependability and consistency in performance or outcome that is often considered unachievable in practice.

Construct Validity

Construct validity is demonstrated when the measures of one concept or construct agree with the measures of other related concepts.