College Algebra / Unit 3 Alg 135 short lesson, about 20 seconds
Identity, Conditional, and Inconsistent Equations
Captions available
The idea
Every linear equation is one of three kinds: an identity is true for all values, a conditional for some, an inconsistent for none.
In practice
2(x + 1) = 2x + 2 holds for every x; 2x = 6 holds only at 3; x + 3 = x + 5 holds never.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
Builds on
- Nothing. This is a starting point.
Unlocks
- Nothing yet depends on this.
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