Coordinate System

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Last updated 1:34 AM on 7/4/26
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15 Terms

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Linear Coordinate System

graphical representation of the real numbers as points of a straight line

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Rectangular Coordinate System

two linear coordinate systems intersecting at right angles in their origins

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Origin

(0,0)

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Coordinate of a point

the number that corresponds to a point

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Abscissa

the x-coordinate of an ordered pair

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Ordinate

the y-coordinate of an ordered pair

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Quadrants

the four sections of the coordinate plane

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Distance formula

d = √[( x₂ - x₁)² + (y₂ - y₁)²]

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Midpoint formula

(x₁+x₂)/2, (y₁+y₂)/2

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Slope

steepness of a line

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Point-slope equation

y - y1 = m(x - x1)

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Slope-intercept equation

y = mx + b

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Parallel lines

lines with the same slope

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Perpendicular lines

lines that intersect at 90 degrees

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Perpendicular lines

m1m2 = -1

m2 = - ( 1 / m1 )