Variables and patterns vocabulary
22
Vocabulary Notes • Use a ruler to divide each MJ page into fourths. (MJ p14-15) • Vocabulary Term • Visual Representation • Definition • Personal Association or Characteristic
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Transcript of Variables and patterns vocabulary
Vocabulary Notes
• Use a ruler to divide each MJ page into fourths. (MJ p14-15)
• Vocabulary Term
• Visual Representation
• Definition
• Personal Association or Characteristic
Variables and PatternsVariables and Patterns
Definition:
An amount that can change; Letters are used as symbols to represent variables.
Variable
Example:
Your age, your height,
your grade in math class!
Variables and PatternsVariables and Patterns
Definition:
A display of the relationship between 2 variables.
Example:
The relationship between time and distance.
Coordinate Graph
Variables and PatternsVariables and Patterns
Definition:
The value of this variable is determined by the other variable. It is graphed on the Y- axis.
Example:
The cost of a long distance call depends on how long you talk.
Dependent Variable
Variables and PatternsVariables and Patterns
Definition:
The number line that is vertical in a coordinate grid.
Y axis
X axis
Y axis
Example:
How many students ate lunch on those days would go on the Y axis.
Variables and PatternsVariables and Patterns
Definition:
The value of this variable determines the value of the other variable. It is graphed on the X- axis.
Independent Variable
Example:
Time is an independent variable.
Variables and PatternsVariables and Patterns
Definition:
The number line that is horizontal in a coordinate grid.
X axis
X axis
Y axis
Example:
Days of the week would go on the X axis
Variables and PatternsVariables and Patterns
Definition:
A labeling plan used in the axes of a coordinate grid; Needs to be consistent and appropriate.
Scale
Example: On a map, 1 inch = 1 mile.
Variables and PatternsVariables and Patterns
Definition:
An ordered pair of numbers used to locate a point on a coordinate grid.
Example:
(X,Y) or (5,3)
Coordinate Pair
Variables and PatternsVariables and Patterns
Definition:
An association between 2 or more variables. If one variable changes the other may change as well.
Relationship
Example: There is a relationship between gas in a car and how far driven.
Variables and Patterns
Making Coordinate Graphs4 Steps
– Identify two variables
– Select an axis to represent each variable
– Select a scale for each axis
– Plot the data points
Variables and Patterns
• That is the end of today’s vocabulary notes.
• Let’s get started on Investigation 1.2
Variables and PatternsVariables and Patterns
Definition:
To become different.
Example:
Temperatures rise and fall
Prices will increase or decrease.
Change
Variables and PatternsVariables and Patterns
Definition:
A rule with variables that represents a mathematical relationship.
equation or formula
Example: Area of a Circle has the formula A= r²
Variables and PatternsVariables and Patterns
Definition:
A change that happens in an expected way.
Pattern
Example: 3, 6, 9, 12… forms a pattern of counting by 3’s
Variables and PatternsVariables and Patterns
Definition:
A predictable relationship that tells how to find the value of a variable.
Rule
Example: Distance is equal to rate X time; d=rt
Variables and PatternsVariables and Patterns
Definition:
A list of values for two or more variables showing a relationship.
Table
Example: Data from observations, experiments, or calculations.
shirts cost
1 12.00
2 24.00
3 36.00
4 48.00
5 60.00
Variables and PatternsVariables and Patterns
Definition:
1st number in a coordinate pair.
Example:
(X,Y) or (5,3)
X - Coordinate
Variables and PatternsVariables and Patterns
Definition:
2nd number in a coordinate pair.
Example:
(X,Y) or (5,3)
Y - Coordinate
Variables and PatternsVariables and Patterns
Definition:
Amount of money a business takes in from selling products or charging fees
Income
Example: A theater takes in 5.00 for every person that comes to watch a movie.
Variables and PatternsVariables and Patterns
Definition:
Amount of money a business spends to run its activities.
Cost
Example: A theater spends 500.00 dollars a month for rent on the building.
Variables and PatternsVariables and Patterns
Definition:
Income minus cost; Income should be larger than the cost.
Profit
Example: A theater makes $1500.00 and pays $500.00 dollars a month for rent. The profit is $1000.00
