1. 1.2. 3. 4.

3.  Function  Coordinate System  Y-Axis  X-Axis  Origin  Ordered Pair  X-Coordinate  Y-Coordinate  Independent Variable  Dependent Variable  Relation  Domain  Range

4.  Coordinate System › Formed by the intersection of two number lines (the horizontal and vertical axis)  Dependent Variable › The variable in a relation whose value depends on the value of the independent variable › Usually graphed on the vertical axis  Domain › First number in the ordered pair › The x value

5.  Function › A relationship between input and output  Independent Variable › The variable in a function whose value is subject to choice › Usually graphed on the horizontal axis  Ordered Pair › A set of numbers, or coordinates › Written (x, y)  Origin › The point where the axes intersect › (0,0)

6.  Range › The second number in a set of ordered pairs › The y value  Relation › A set of ordered pairs  X - Axis › The horizontal axis in a coordinate system  X - Coordinate › Corresponds to the x - axis › The x value (x, y)

7.  Y - axis › The vertical axis in a coordinate system  Y - coordinate › Corresponds to the y – axis › The y value (x, y)

8.  ENERGY: › In warm climates, the average amount of electricity used in homes each month rises as the daily average temperature increases, and falls as the daily average temperature decreases. Identify the independent and dependent variables in this function of temperature and electricity usage.

9.  FOOD › There are three lunch periods at a school cafeteria. During the first period, 352 students eat lunch. During the second period, 304 students each lunch. During the third period, 391 students eat lunch. › A. Make a table showing the number of students for each of the 3 lunch periods.

10.  FOOD › There are three lunch periods at a school cafeteria. During the first period, 352 students eat lunch. During the second period, 304 students each lunch. During the third period, 391 students eat lunch. › B. Write the data as a set of ordered pairs.

11.  FOOD › There are three lunch periods at a school cafeteria. During the first period, 352 students eat lunch. During the second period, 304 students each lunch. During the third period, 391 students eat lunch. › C. Draw a graph that shows the relationship between the lunch period and the number of students.

12.  Axes  Coordinate Plane  Graph  Quadrant

13.  Axes › Two perpendicular number lines  Coordinate Plane › The plane containing the x and y axes  Graph › To draw a dot at the point on the coordinate plane that corresponds to an ordered pair  Quadrants › Four regions of the coordinate plane › Divided by the horizontal and vertical axes

14. Know these quadrants and where they are! You must name them with Roman Numerals!

15. Ordered PairQuadrant  1.A  2.B  3.C  4.D  5.E  6.F  7.G  8.H  9.I

16.  10.A(3,1)  11.B(-2,0)  12.C(2,-5)