Number Sense & Algebra
NSA1 Exponents & Proportions
Exponents (basic)
Multiply monomials intro
Linear Relations
LR2: Characteristics of Linear Relations
LR3: Representing Linear Relationships
Analytic Geometry
AG1: Forms of Linear Equations
Measurement & Geometry
MG1: Optimization
There is no Khan Academy practice for this topic exactly, but click here for a textbook section including some practice problems at the end.
Some related skills you might need practice with:
MG3: Geometric Relationships
Review from Grades 1 - 8