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
Irrational numbered are 2 6/11. -28/11
Q= rational
45=q
irrational numbers
At decimals that nether terminate not repeat such as the numbers pi and 8.724747284473936 are irrational
Coefficient the numerical part of screen that contains a variable
Coefficient is 3 in 3x and x or 1x is 1
Constant term without a variable 7 or 2 Like terms terms that contain the same variables or are constants 3x and x or 7 and 2 3x +4y +x= 4x+4y 3x+x+7+2 4x+9 simplest form abc order
Closed circle= less than or equal to or grater than or equal to
Open circle is less than or greater than
If in equality u divide by negative number switch sign
-5t>10
-5. -5
T<2
-5s-14=2(2s+3)-9s
-5s-14=4s+6-9s
-5s-14. -5s+6
+5s. +5s
-14=. 6
Null or empty set
No solution
If it equal 10=10 identity 10 always equals 10
D
