Math Nid Yr Flashcards
Expression no equal sign
No equal sign
Algebraic expression
Variables
No equal sign
Numbers
Symbols
Variable.
A letter symbol used to represent an unknown value
Commutative property
The order in which numbers are added or multiplied does not change the sum or product
5+9=9+5. 4•7=7•4
Associative property
The order in which numbers are GROUPED when added or multiplied does not change the sun or product parentheses usually
(3+6)+1=3(6+1). (5•9)2=5(9•2)
Additive identity
Zero doesn’t change the number identity
Multiplicative identity
When any number is multiplied by 1 the product is the number
Multiplicative property of zero
When any number is multiplied by zero the product is zero
12/6. 6/12
2. .5
Watch out for division
12+(18+x)
(12+18)+x
30+x
Both communative and associative properties
Domain and range
Range is right
Domain is left
Don’t repeat the numbers just put in numerical order
Domain {1,2,3}
Range {0,2,3,4}
X. Y
1. 2
1. 3
2. 4
3. 0Scatter plot
Show the relationship between two sets of data (two variables) Up, down no relationship Positive. Negative Most up positive Most down negative The x is consistant
Absolute value
The distance from the number to zero |2|= the absolute value is two |-3|= the absolute value of negative three is tree |-3|=3 absolute value always positive -|2|=-2 -|-2|=-2 -|3+4|=-|7|= -7
Translation is hen you slide a figure from one position to another
Reflection is when you flip a figure over. Line= line of symmetry
C'= prime Reflection Y axis Y same x opposite X axis X same y opposite X left minus Right plus Y up plus Down minus
N=0.7878... 100n= 78.7878... -n= - 0.7878p -n=. 78 99n. 78. =. 26 99. =. 99. 33
Watc out for .6666
10n
9n
