1. stands out. OUTLIER 15 is an outlier.
Definition:
A data value that is much higher or lower than the other data values in the set.
Remember:
Basically, the outlier is
the number that  
stands out.
Example:
2, 4, 6, 4, 7, 2, 3, 5, 3, 15, 6, 4
In this data set,
15 is an outlier.
(15 is a much higher number than the others.)
Picture:
Which one is the outlier?
OUTLIER

2. This matrix A has three rows and four columns.
Definition:
A rectangular arrangement of numbers.
Remember:
Each item in a MATRIX is an element.
More Information:
The number of rows and
columns of a MATRIX
determines its size.
Picture:
( )
( )
( )
This 4 is an element.
MATRIX
This matrix A has three rows and four columns.
We say it is a 3 x 4 matrix.

3. The more hours (x) worked, the more money (y) earned.
Definition:
An equation that can be expressed in the form y = kx, where k ≠ 0.
If x increases, so does y.
If x decreases, so does y.
Remember:
Direct:
If a number on one side of the equation increases, then the number on the other side of the equation
will also increase.
Example:
y=kx
The more hours (x) worked, the more money (y) earned.
DIRECT VARIATION
Different Side

4. Same Side INVERSE VARIATION Inverse:
Definition:
An equation that can be expressed in the form xy = k.
If x increases, y decreases.
If x decreases, y increases.
Remember:
Inverse:
If one of the numbers on one side increases, then the other number on that side of the equation will decrease.
Example:
The more people painting the school (x), the less time (y) it takes to do the job.
INVERSE VARIATION
Same Side

5. I, II, III, IV are all Quadrants.
Definition:
The four parts into which the coordinate plane is divided by its axes.
means 4
Picture:
I, II, III, IV are all Quadrants.
Quad
QUADRANTS