MathematicsMiddle School

Linear functions

k sets slope, b sets position

Estimated time · 10 min 9 Content blocks

Core concepts

Formulas

y=y =
x+x +

Tap a symbol to see what it stands for

Interactive example

Interactive exampleClick to highlight each parameter

Click a term to highlight it in the expression

Diagrams

y = 0.8x + 1
The graph of a linear function is a line

Worked example

Worked example
Example
Solution steps
  1. 1
  2. 2
  3. 3
Answer
Practice setLinear function practice
Answered 0 / 3
1Fill in the blank
2Fill in the blank
3True / False
Results are not saved — this session disappears when you leave.

Glossary

Slope
Intercept

Prerequisites

Functions and variables8 min

Related knowledge points

Inverse proportional functions10 min
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