CO3 - Analytic Geometry and Conic Sections

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Equations of Lines, Circles, Conic Sections: Parabola, Ellipse, Hyperbola

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47 Terms

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straight line

shortest path between two points

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Standard Form of Line

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slope

measure of steepness

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inclination

Positive angle measured counterclockwise from the x-axis to a nonhorizontal line

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m=tanθ

If a nonvertical line has inclination θ and slope m

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Slope of a Line

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x-intercept

Point where line intersects with the x-axis

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y-intercept

Point where line intersects with the y-axis

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Slope-Intercept Form

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Point-Slope Form

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Two-point Form

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parallel lines

Lines with equal slopes

<p>Lines with equal slopes</p>
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perpendicular lines

The slope of one line is the negative reciprocal of the other.

<p><span style="font-size: calc(var(--scale-factor)*18.00px)">The slope of one line is the negative reciprocal of the other.</span></p>
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perpendicular lines

Finding the distance between a line and a point not on the
line is an application of __________.

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Distance Between a Line and a Point

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circle

a set of points that are equidistant from a fixed point, C(ℎ, 𝑘)

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center

C(ℎ, 𝑘)

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radius

The fixed distance 𝑟 from the center to any point on the circle

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Standard Form of the Equation of a Circle

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Equation of a Circle Centered at the Origin

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General Equation of a Circle

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conics

Curve obtained from a cone’s surface intersecting a plane

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conic sections

Parabolas, Ellipses, Hyperbolas

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parabola

The set of points in a plane that are equidistant from a fixed line, the directrix, and a fixed point, the focus, not on the directrix

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axis of symmetry of the parabola

The line that passes through the focus and is perpendicular to the directrix

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vertex of the parabola

The midpoint of the line segment between the focus and the directrix on the axis of symmetry

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vertex of the parabola

The midpoint of the line segment between the focus and the directrix on the axis of symmetry

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latus rectum

The line segment that passes through the focus and is parallel to the directrix, and with endpoints on the parabola

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ellipse

The set of all points in a plane such that the sum of the distances of P from two fixed points and of the plane is constant.

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