Find and equation of the parabola described 1. Focus (2,0): directrix r 2
Contingency Table
A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.
Binomial Distribution
Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.
1)
Parabola:
A parabola is an arc shaped curve in which every point on the curve is at an equal distance from a fixed point called Focus and a fixed straight line called Directrix.
The focus and Directrix of the parabola are (2, 0) and x = –2 respectively.
It is known that the distance between any point and the focus of the parabola is same as that of the distance between that point and the directrix of the parabola.
Let (x0, y0) be a point on the parabola.
The distance between the point (x0, y0) and the focus (2, 0) is, .
The distance between (x0, y0) and the directrix x = –2 is .
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