8.2.2.b Analyze and solve pairs of simultaneous linear equations.
8.2.2.b.i Explain that solutions to a system of two linear equations in two variables correspond to points of intersection of their graphs, because points of intersection satisfy both equations simultaneously.
8.2.2.b.ii Solve systems of two linear equations in two variables algebraically, and estimate solutions by graphing the equations. Solve simple cases by inspection.
8.2.2.b.iii Solve real-world and mathematical problems leading to two linear equations in two variables.
8.2.3 Graphs, tables and equations can be used to distinguish between linear and nonlinear functions
8.2.3.a Define, evaluate, and compare functions.
8.2.3.a.i Define a function as a rule that assigns to each input exactly one output.
8.4.1.f Given two similar two-dimensional figures, describe a sequence of transformations that exhibits the similarity between them.
8.4.1.g Use informal arguments to establish facts about the angle sum and exterior angle of triangles, about the angles created when parallel lines are cut by a transversal, and the angle-angle criterion for similarity of triangles.