linear function

Constant rate relationship

A linear function is a mathematical function whose graph forms a straight line.

In its simplest form, it relates two variables where one changes at a constant rate relative to the other: The relationship between hours worked and pay is a linear function.

The equation typically takes the form y = mx + b, where m is the slope and b is the y-intercept.

Linear functions model proportional relationships and form the foundation of linear algebra.

graph

slope

Angled terrain or steepness

coordinates · origin · plot · plane · axis · quadrant · rise · run · straight · point

properties

continuous

Without pause or gap

decreasing · invertible · transformation · translation · reflection · parallel · perpendicular · zero · root · x-intercept

proportional

rate

Measured speed or charge

  • ratioComparative numerical relation
  • constantFixed, unvarying quantity
  • scaleMeasure of relative size

proportionality · multiplier · factor · unit rate · per · relationship · correspondence · dependent · independent · correlation

applications

cost

Required payment amount

depreciation · salary · temperature · conversion · prediction · model · interpolation · extrapolation · trend · regression

equation

slope-intercept

Linear equation format

variable · solution · solve · substitute · rearrange · simplify · evaluate · parameter · expression · formula

Categories
Opposites
mathematical function type

linear functionquadratic function

Polynomial with highest power two

exponential function · polynomial function · exponential growth · exponential decay · step function

relationship complexity

linear functionexponential growth

Quantity multiplying proportionally over time

exponential decay · geometric progression · compound growth

Family

linear, function, line, lines, lined, lining, liner, linearly, linearity

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