7.4 Consistent and Inconsistent Systems pg. 338 to 344

So far you have learned how to solve systems of equations by:

1. Graphing2. Substitution3. Elimination

YOU ARE STILL DOING THIS FIRST!

NOW--you get to pick the method you want to solve withAND--you have to classify the system by a name:

Inconsistent---(NO answer-cancels itself out, lines are parallel)

Consistent and independant---(ONE answer) (This is what you have been doing)

Consistent and dependant ( SAME exact equations/lines)

1. Consistent dependant (same line, infinite answers)2. Inconsistent (parallel lines--no intersection)3. Consistent independant ( 0, -2)4. Consistent independant (1,1)