Transcript PC_Real world coordinate plane 2 day keynote

Graph points on the coordinate
plane to solve real-world and
mathematical problems.
 UW.GAP.5.M.G.02 Represent real world and mathematical
problems by graphing points in the first quadrant of the
coordinate plane, and interpret coordinate values of points in
the context of the situation.
Objective: I can graph points on a
coordinate plane using real-world
situations.
SET.......
So think what is an integer?
How do you order integers?
Share with your table group
Coordinate Grid
A coordinate grid has two perpendicular lines, or
axes, labeled like number lines.
The horizontal axis is called the x-axis. The vertical
axis is called the y-axis.
The point where the x-axis and y-axis intersect is
called the origin.
Ordered Pairs
The numbers on a coordinate grid are used to locate
points. Each point can be identified by an ordered pair of
numbers; that is, a number on the x-axis called an xcoordinate, and a number on the y-axis called a ycoordinate.
Ordered pairs are written in parentheses (x-coordinate,
y-coordinate). The origin is located at (0,0). Note that
there is no space after the comma.
Graphing coordinate pairs
The location of (2,5) is shown on the coordinate grid
below. The x-coordinate is 2. The y-coordinate is 5. To
locate (2,5), move 2 units to the right on the x-axis and
5 units up on the y-axis.
Graphing Coordinate pairs
The order in which you write x- and y-coordinates in an
ordered pair is very important. The x-coordinate always
comes first, followed by the y-coordinate. As you can see
in the coordinate grid below, the ordered pairs (3,4) and
(4,3) refer to two different points!
Practice
(3, 5)
Practice
(4, 2)
Practice
(1,6)
Practice
(0,4)
Increasing/Decreasing/ Intervals
 Increasing- going up
 Decreasing – going down.
 Intervals- number counting by on graph.
Independent practice
Using a piece of grid paper, graph the following
information and answer the questions
Sara has saved $20.00. She earns $8 for each hour she
works. If Sara saves all of her money, how much will she
have after working 3 hours? 5 hours? 10 hours? Create a
graph that shows the relationship between the hours
Sara worked and the amount of money she has saved.
What other information do you know from analyzing
the graph?