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Line (Algebra)

Line (Algebra)

One-page printable reference

See It in Action

Two examples of the idea done right—and one common look-alike that is not right.

EXAMPLE

EXAMPLE

NON-EXAMPLE

Definition

A line is a straight one-dimensional figure that extends infinitely in both directions. It is defined by a linear equation and can be represented graphically on a coordinate plane. A line has a constant slope, which indicates its steepness, and it can be described using various forms of equations, such as slope-intercept form (y = mx + b), point-slope form, or standard form. Lines can also be classified as horizontal, vertical, or slanted based on their orientation.

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This term is one piece. Our courses build it into everything around it—short videos, practice, and the “why” behind every concept.

Algebra 1

Lines, slope, functions & more

Geometry

Shapes, proofs & spatial reasoning

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