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Definition1

Title: Linear Functions

Grade Lesson s5-l3

Explanation: The best way to understand SAT-4 is by looking at some definitions. Take turns and read each definition for easy understanding.

Definition

Topics → Definition Example1

Definition: Linear Functions

A linear function is a mathematical function that can be represented by a straight line when graphed on a Cartesian coordinate system. It takes the form of an algebraic expression.

f(x) = mx + b

$1$

. https://uat-image.saibook.org/edu/math/psat/v4/psat-core/s5/l3/definition/1.jpg

Explanation:

The given image shows the linear function, so here

f(x) represents the output or dependent variable.

x represents the input or independent variable.

m represents the slope of the line.

b represents the y-intercept (The point where the line crosses the y-axis).