Chapter 3 Goals

[3.1] Determine whether a given point is a solution to a system.
Know the cases of infinite solutions, no solution, and one solution.
Know how to solve a system of two equations by graphing the equations by hand.
Tutorial 1 | Solutions
Tutorial 2 | Solutions

[3.2] Know how to solve a system of two equations by substitution.
Tutorial 1 | Solutions
Tutorial 2 | Solutions
Tutorial 3 | Solutions

[3.2] Know how to solve a system of two equations by the linear combination method (addition method).
Tutorial | Solutions

[3.3] Know how to graph a system of inequalities.
Know what a “solution” of a system of inequalities means. It’s ONE of the shaded (“true”) areas.
Know when to use a dotted vs solid line.
Know how to use test points to determine which side of each line to shade.
Tutorial | Solutions

[3.5] Know how to draw a set of 3D axes and plot a 3D point.
Know how to make a 3D point into a box (with one corner at the point and the other at the origin).
Tutorial | Solutions

[3.5] Know how to find the intercepts of a plane and graph a triangular cross section of it.
Know how to find the volume and surface area for rectangular solids.
Tutorial | Solutions

[3.6] Know how to solve a system of three equations by substitution.
Tutorial 1 | Solutions
Tutorial 2 | Solutions

[3.6] Know how to solve a system of three equations by the linear combination method (addition method).
Tutorial 1 | Solutions
Tutorial 2 | Solutions
Tutorial 3 | Solutions