04:13duration 4 minutes 13 seconds

Classifying systems of linear equations from…

Classifying systems of linear equations from graphs

Looks at the three types of graphs that can occur with a system of two linear equaltions in two variables.

05:42duration 5 minutes 42 seconds

Identifying solutions to a system of linear…

Identifying solutions to a system of linear equations

This demonstrates testing possible answers to a system of two equations to see whether they are truly answers or not. Note that each answer has to work for both equations, but if it doesn't…

06:03duration 6 minutes 3 seconds

Solving Problems About Distance, Rate, and Time

Describes how to solve a distance problem where the times of two different trips are the same.