Vocab
what is the meaning of Variables
letters we use to represent numbers like X or Y
a number added to 5
X + 5
a + 4 , a = 8
12
x + 2 = 6
x = 4
Integer
The set of whole numbers and their opposites.
Subtract a number from 8
8 - X
2y - 11 , y = 8
5
14 - y = 9
y = 5
Inverse
The opposite of an operation
Multiply the number by 3
3x
15 - 3z , z = 3
6
2x + 3 = 17
x = 7
It is the value that doesn't change
Constant
divide the number by 2
x / 2
x / 2 , x = 8
4
x/2 + 1 = 5
x = 8
what are the numbers less than zero called
negative numbers
Multiply the number by 2 then add 7
2x + 7
4t + 8x , t=2, x = 3
32
4x + 1 = 5