Vocabulary
the name for the unknown number that is represented with a letter
variable
2x + 5x =
3x + 9 = 30
x = 7
3x+9
3(x+3)
The name of the graph of a quadratic function.
Parabola
the name for a number whose value will always remain the same (no variable)
constant
2x - 5x
-3x
4(2x-5) = 60
x = 10
x2+6x+8
(x+2)(x+4)
The special name of a polynomial with 3 terms
A trinomial
the number in front of a variable in a variable term
EX: 5x (what is the 5 called?)
co-efficient
2x·5x
10x2
x/3+5=20
45
x2-6x+9
(x-3)2
The type of functions that has a degree of 2.
Quadratic
Numbers, symbols and operations (such as + and ×) grouped together that represent the value of something
expression
x3·x5
x8
3x + 10 = 2x
x = 5
x2+5x-14
(x+7)(x-2)
The slope formula
(y2-y1)/(x2-x1)
A mathematical expression that shows the value of the expression using an equal sign
equation
(x3)4
x12
5(2x+1)=45
4
2x2-9x-5
(2x-1)(x-5)
b represent in y=mx+b
y-intercept