Date post: | 27-Mar-2015 |
Category: |
Documents |
Upload: | nathan-whitaker |
View: | 253 times |
Download: | 6 times |
What Comes Next
• Here is a sequence of letters:
• O T T F F S ____, _____, _____
• What 4 letters come next in this sequence?
• What does the sequence represent?
Solution
• The next four letters are S, E, N, and T.
• Each letter is the first letter of a number written in word form, the numbers being the sequence of natural numbers: One, Two, Three, Four, Five, Six, Seven, Eight, Nine, Ten.
3-3 The Coordinate Plane
Coordinate Planes
X-axis
Y-axis
QuadrantOne
QuadrantTwo
QuadrantThree
QuadrantFour
-4 -3 -2 -1 0 1 2 3 4
4
3
2
1
-1
-2
-3
-4
origin
4
3
2
1
-1
-2
-3
-4
-4 -3 -2 -1 0 1 2 3 4
An ordered pair is a pair of numbers used to locate a point on the coordinate plane.
The ordered pair is always listed with the x-coordinate then the y-coordinate. ( x, y) Ex. (5, -3)
QuadrantOne
( +, +)
QuadrantTwo
(-, +)
QuadrantThree
(-, -)
QuadrantFour
(+, -)
To read or write an ordered pair always locate the x coordinate first.
-4 -3 -2 -1 0 1 2 3 4X -Axis
( 1, )
4
3
2
1
-1
-2
-3
-4
Y axis
Then locate the y coordinate.
( 1, 3 )
The ordered pair at the origin is (0, 0)
What are the ordered pairs for these points?
4
3
2
1
-1
-2
-3
-4
-4 -3 -2 -1 0 1 2 3 4
(3,4)
(1,1)
(2, -2)
(0, -3)
(-4, 0)
(-3, 3)
Plot the following points on the coordinate plane.
(2, -4) (-1, -1) (3, 2) (-4, 3)
-4 -3 -2 -1 0 1 2 3 4
4
3
2
1
-1
-2
-3
-4
When will we use this?
• The coordinate plane is used to locate places on a map. Lines of latitude and longitude are used.
• Hurricane tracking uses the coordinate plane.
•The coordinate plane is used to plot points on a graph.
•There are 4 Quadrants in the coordinate plane.
•The x-axis is the horizontal axis, the y-axis is the vertical axis.
•Points are written as ordered pairs: (x, y).
•To locate a point on a graph locate the
x-coordinate first and then the y-coordinate.
Don’t Forget:
Homework- Lesson 3-3 # 2-22 evens