Transcript MCT MATH WORKSHOP - Washingtonville Central School District

Coordinate System
Today’s lesson
Do Now: Slide show
Guided practice with ordered pairs
Coordinate System
Graphing and Ordering Pairs
Coordinate Plane
Y - Axis
Quadrant 2
Quadrant 1
X - Axis
Quadrant 3
Quadrant 4
Origin
(0,0)
Terms
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Ordered pairs
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a list of two numbers that describes the location of a point on a
coordinate plane. (0,2)
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X-Coordinate
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shows the position left and right (horizontal) of the coordinate
plane. It is the first number in the ordered pair.
Y-Coordinate
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What axis would this point be located on?
shows the position up and down (vertical) of the coordinate
plane. It is the second number in the ordered pair.
Coordinate pairs are always written in the format (X value,Y
value)
Graphing Skills
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Set of ordered pairs
(-3,2), (3,4), (0,0), (-5,-6)
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Steps for graphing

1st graph the xcoordinate
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Right or left
2nd graph the ycoordinate
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Up or down
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
12 11 10 9 8 7 6 5 4 3 2 1
1 2 3 4 5 6 7 8 9 10 11 12
0
 3rd

Graph the point
with a dot
4th label the points
B
(A)
C
D
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
Y - AXIS
X - AXIS
Sum It Up
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Previous Knowledge

Terminology
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
Y - Axis
X-axis- the horizontal
axis
Y-axis- the vericle axis
Origin- the intersection
or the X and Y axes
Quadrants
Ordered Pairs – the x
and y coordinates that X - Axis
locate a point.
Quadrant 2
Quadrant 1
Quadrant 3
Quadrant 4
Graphing Skills
(-3,2), (0,0) (3,4)
Origin
Graphing in Science 7

The line graphs produced by students in
science 7 are plotted completely in quadrant
1. This is because we work with both positive
X values and positive Y values.
Graphing skills Coordinate Pairs Practice
Now you try:
on the numbered coordinate grid supplied
plot the following 10 points 1(8,9) 2(7,7)
3(5,7) 4(7,6) 5(6,4) 6(8,5) 7(10,4) 8(9,6)
9(11,7) 10(9,7)
When you have plotted the point join them
together in the order you plotted them 1-10
and finally join point 10 to point 1.
Graphing skills Coordinate Pairs Practice
My product will contain:
Ordered pairs written in the correct format.
A graph with:
- a Title
- axes labeled including units
A written response which uses the numbers
(quantitative observations) to support your
answer.
What Did I Learn Today?
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What did we learn about ordered pairs?
How do we plot them?
Why do we make a graph?
What type of observation did we learn to pull
out of the text to plot?