i hate math

Real \#'s

A number that is
rational or irrational

Irrational \#'s

Non-terminating and
Non-Repeating decimals

Rational \#'s

any \# that can be written as a fraction, terminating (ending) decimal (0.25), or repeating decimal (0.212121....)

Integers

{ ....-3, -2 -1, 0, 1, 2, 3 ....}

Whole \#'s

{ 0, 1, 2, 3 ....}

Natural or counting \#'s

{ 1, 2, 3 ....}

When a rational is added to an irrational \# the result is ...

Always Irrational
R + I = I

the product of two irrational \#'s is....

Sometimes Irrational and
Sometimes Rational

the sum of two rational \#'s is ...

Always Rational
R+R= R

The product of a rational \# and an irrational \# is....

Always Irrational
R x I = I

Real Number Chart

Subtracting Polynomials

FROM comes FIRST!

Greater Than
Greater Than or Equal to

\>, ≥

Less Than
Less Than or Equal To

At Most

≤

At Least

≥

No Solution or Infinite Solutions
to an equation

2 does not = 7 , 2x=2x

Interval Notation

\[2,6)

Inequality / Interval Notation

1 < x ≤ 6

Is the relation a Function?

Each x used only ONCE! (x's can't repeat)

Domain of a Function

x values

Range of a Function

y values

Linear-Function

line graphs

Non-Linear Function

not line graphs

Is the graph a function?
(Vertical Line Test)

drop a vertical line, only touches once

Average Rate of Change

slope formula (y-y) / (x-x)

Function Notation

f(x) = 5x, for f(2) plug in and solve, 10

Slope formula

slope formula (y-y) / (x-x)