algebra 1/2
algebra 1/2 quiz on sections 1.1 and 1.2
Terms
undefined, object
copy deck
- reflexive
- a=a
- PEMDAS
- parentheses, exponents, multiplication or division, addition or subtraction
- irrational number
- number that can't be written as a ratio and is a non-repeating, non-terminating decimal
- addition and subtraction
- if a=b, then a+c=(b)(c) and a-c=b-c
- identity
- a+0=a, 0+a=a, ax1=a, 1xa=1
- integers
- ...-4, -3, -2, -1, 0, 1, 2, 3, 4...
- real number
- any number
- natural number
- 1, 2, 3, 4...
- transitive
- if a=b, and b=c, then a=c
- commutative
- a+b=b+a, axb=bxa
- multiplication and division
- if a=b, then (a)(c)=(b)(c) and a/c=b/c where c isnt equal to 0
- substitution
- if a=b, then a may be replaced by b
- whole number
- 0, 1, 2, 3, 4...
- symmetric
- if a=b, then b=a
- associative
- (a+b)+c=a+(b+c), (axb)xc=ax(bxc)
- inverse
- a+-a=0, -a+a=0, ax1/a=1, 1/axa=1
- distributive
- a(b+c)=ab+ac, (b+c)a=ba+ca
- rational number
- number that can be written as a ratio