Khan Academy

Age word problem: Imran (K-A)

Testing a solution to a system of equations (K-A)

How many solutions does a system of linear equations have if there are at least two? (K-A)

Number of solutions to a system of equations (K-A)

Number of solutions to a system of equations algebraically (K-A)

Number of solutions to a system of equations graphically (K-A)

Number of solutions to system of equations review (K-A)

System of equations word problem: walk & ride (K-A)

Systems of equations with elimination: King's cupcakes (K-A)

Systems of equations with elimination: x-4y=-18 & -x+3y=11 (K-A)

Why can we subtract one equation from the other in a system of equations? (K-A)

System of equations word problem: infinite solutions (K-A)

System of equations word problem: no solution (K-A)

Systems of equations with elimination: apples and oranges (K-A)

Systems of equations with elimination: coffee and croissants (K-A)

Systems of equations with elimination: TV & DVD (K-A)

Systems of equations with substitution: coins (K-A)

Absolute value graphs review (K-A)

Graphing absolute value functions (K-A)

Scaling & reflecting absolute value functions: equation (K-A)

Scaling & reflecting absolute value functions: graph (K-A)

Shifting absolute value graphs (K-A)

Introduction to piecewise functions (K-A)

Worked example: domain & range of piecewise linear functions (K-A)

Worked example: domain & range of step function (K-A)