Pre-algebra
Explore the world of functions and linear models, learning to interpret, create, and analyze graphs, and understand relationships between variables to solve real-life mathematical problems.
200+ videos and assessments
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VIDEOS

What is a function?
Khan Academy
•9th - 9th Grade
•5 Qs

Function notation example
Khan Academy
•5th - 8th Grade
•9 Qs

Worked example: Evaluating functions from equation
Khan Academy
•6th - 10th Grade
•5 Qs

Worked example: Evaluating functions from graph
Khan Academy
•6th - 8th Grade
•5 Qs

Obtaining a function from an equation
Khan Academy
•7th - 10th Grade
•10 Qs

Equations vs. functions
Khan Academy
•8th - 12th Grade
•10 Qs

Manipulating formulas: temperature
Khan Academy
•6th - 10th Grade
•10 Qs
VIDEOS

Linear equations word problems: volcano
Khan Academy
•6th - 9th Grade
•10 Qs

Linear graphs word problem: cats
Khan Academy
•5th - 8th Grade
•10 Qs

Linear graphs word problems
Khan Academy
•6th - 10th Grade
•10 Qs

Linear equations word problems: earnings
Khan Academy
•6th - 10th Grade
•10 Qs

Linear function example: spending money
Khan Academy
•6th - 8th Grade
•10 Qs

Modeling with linear equations: snow
Khan Academy
•5th - 8th Grade
•10 Qs

Fitting a line to data
Khan Academy
•7th - 12th Grade
•10 Qs
VIDEOS

Comparing linear functions: faster rate of change
Khan Academy
•6th - 10th Grade
•10 Qs

Comparing linear functions: equation vs. graph
Khan Academy
•6th - 10th Grade
•10 Qs

Comparing linear functions: same rate of change
Khan Academy
•8th - 12th Grade
•10 Qs

Comparing linear functions word problem: climb
Khan Academy
•8th - 12th Grade
•10 Qs

Comparing linear functions word problem: walk
Khan Academy
•6th - 10th Grade
•10 Qs

Comparing linear functions word problem: work
Khan Academy
•6th - 9th Grade
•10 Qs
VIDEOS

Linear functions word problem: fuel
Khan Academy
•6th - 10th Grade
•10 Qs

Linear functions word problem: pool
Khan Academy
•6th - 10th Grade
•10 Qs

Modeling with linear equations: gym membership & lemonade
Khan Academy
•6th - 10th Grade
•10 Qs

Linear functions word problem: iceberg
Khan Academy
•6th - 10th Grade
•10 Qs

Linear functions word problem: paint
Khan Academy
•6th - 10th Grade
•10 Qs
VIDEOS

Relations and functions
Khan Academy
•9th - 12th Grade
•10 Qs

Testing if a relationship is a function
Khan Academy
•6th - 9th Grade
•10 Qs

Checking if a table represents a function
Khan Academy
•6th - 8th Grade
•6 Qs

Recognizing functions from table
Khan Academy
•6th - 8th Grade
•10 Qs

Recognizing functions from graph
Khan Academy
•8th - 12th Grade
•10 Qs

Recognizing functions from verbal description
Khan Academy
•6th - 9th Grade
•6 Qs

Does a vertical line represent a function?
Khan Academy
•7th - 10th Grade
•8 Qs

Checking if an equation represents a function
Khan Academy
•8th - 12th Grade
•10 Qs

Recognizing functions from verbal description word problems
Khan Academy
•6th - 8th Grade
•10 Qs
VIDEOS

Recognizing linear functions
Khan Academy
•6th - 10th Grade
•10 Qs

Linear & nonlinear functions: word problem
Khan Academy
•6th - 10th Grade
•10 Qs

Linear & nonlinear functions: table
Khan Academy
•8th - 12th Grade
•10 Qs

Interpreting a graph example
Khan Academy
•6th - 8th Grade
•10 Qs

Linear & nonlinear functions: missing value
Khan Academy
•6th - 10th Grade
•9 Qs