Alexey Algebra I Chptr 1
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24 terms
Terms | Definitions |
|---|---|
 Equation | has "=" sign, 3x + 7 = 4 |
| Substitution Property | If x=12 then 2x = 2(12); if a=4 and 6 = a +2 then 6 = 4 +2 |
| Multiplicative Inverse Property | 4/5 . 5/4 = 1, a/b . b/a = 1 |
| Symmetric Property | If a = b then b=a; if 2 + x =7 then 7 = 2 + x |
| Open Sentence | no "=" sign, example 3x + 6 |
| Multiplicative Property of 1 | A number times 1 is itself; 3 x 1 = 3; a x 1 = a |
| Additive Inverse Property | A number and its opposite = 0; 3 + (-3) = 0; -a + a = 0 |
| Additive Property of 0 | A number plus 0 equals itself; 2 + 0 = 2; a + 0 = a |
| Associative Property (Addition) | Doesn't matter which way you group numbers when adding ; 2 + (4 + 8) = (2 + 4) + 8 |
| Associative Property (Multiplication) | Doesn't matter which way you group numbers when multiplying ; 2 X (4 X 8) = (2 X 4) X 8 |
| Transitive Property | If a = b & b = c then a = c; if 6 +9 = 3 +12 & 3 +12 = 15 then 6 + 9 = 15 |
| Multiplicative property of 0 | When you Multiply by 0, the answer is always 0; 2 x 0 = 0; 3a x 0 = 0 |
| Commutative Property (Addition) | Number order can be changed in addition; 4 + 8 = 8 + 4 |
| Commutative Property (Multiplication) | Number order can be changed in multiplication; 3 x 2= 2 x 3 |
| Reflexive Property | Equal to itself; a = a; 4 +3 = 4 +3 |
| More than | Add (+) |
| Less than | Sub (-) |
| Quotient | Divide (รท) |
| Decrease | Sub (-) |
| Difference | Sub (-) |
| Increased | Add (+) |
| Of | Times (x) |
| Product | Times (x) |
| Sum | Add (+) |
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