Sets
What is a set made up of?
Elements
What does BIRDMAS stand for?
Brackets
Indices Roots
Multiplication Division
Addition Subtraction
What is an expression? Write an example on the board.
Anything that doesn't have an equals sign
Simplify 2x+3x
5x
x=2 y=1 what is 3x+2y?
8
A={1,2, 3,7,8}, B= {2,4,6,8} What is A intersection B
AnB= {2,8}
-2<4?
True
What's an equation? Write an example on the board.
Anything with an equals sign
Simplify 3x+6x-10
9x-10
a=3 b=-4 What is 4a-2b?
20
A={1,2, 3,7,8}, B= {2,3,6,8} What is A union B?
52 = 16?
False
What is a variable?
A letter or symbol that stands in for a number.
Simplify 7y-8y
-y
Simplify 5(2x+4)
10x +20
U= {1,2,3,4,5,6,7,8} A={1,2,3,7,8}, B= {2,3,6,8} What is A compliment?
A'={4,5,6}
2 divided by 3 > 0.25
True
What's a constant?
A value that doesn't change. (Number with no variable)
Simplify 8+3a + 2b -5a +7b -20
-2a+9b-12
Simplify 6(a+2b)+a-7
7a+12b -7
Give me an example of a subset of Integers.
Good note if you said Natural Numbers!
4 by 3 = 24
False
Here's an expression: 2x - 4y +7a + 10b
What is the coefficient of y ?
-4
Simplify 12a+8b-3a-5b-7c+32+13c
9a+3b+6c+32
Simplify 4(a+b+1)+3(2a-3b-4)
10a-5b-8