Math 8 Oct 14 Hand Out Unit 3 Intro to Graphing

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5-0 – Intro to Graphing
Warm up: Using the provided map to complete the questions below.
1. The town hall can be found at the
intersection of E. Central Avenue and
___________________________
2. What can be found at the intersection
of N. 3rd Street and E. Jefferson Ave.?
_________________________
On the map, you can identify a location by
the intersection of two streets. Finding
points on a coordinate plane is like finding a
location on a map.
Key Vocabulary:
______________________ __________________: Formed by two number lines (x-axis and y-axis)
______________ and ______________: Intersect at right angles to divide the plane into four
quadrants.
______________________: The first number in the ordered pair (X,Y). Tells how many units to
move to the right/left.
______________________: The second number in the ordered pair (X,Y). Tells how many units
to move up/down.
___________________ ______________: The first number in the pair represents the x-coordinate
and the second represents the y-coordinate.
______________: Where you begin plotting points; (0,0). This is the intersection of the x and yaxis.
To plot a point: (2,3)
1.
2.
3.
4.
Start at origin.
Move 2 units to the right (+2).
Move 3 units up (+3).
Put your point.
Example 1: Finding the coordinates and quadrants of points on a plane.
Give the coordinates and quadrant of each point given:
Point M: (
,
); Quad. _________
_____ units right, ______units up
Point O: (
,
); Quad. _________
_____units left, ______units down
Point P: (
,
); Quad. __________*
______ units left
*Rule: When a point is on an axis, it is not considered to be in a quadrant.
Example 2: Graphing Points on a Coordinate Plane
Graph the following ordered pairs on the coordinate plane:
A
(2, 4)
B
(-3, 5)
C
(1, -4)
D
(-5,-6)
E
(0,6)
F
(5,0)
Got it?
Using the coordinate plane to the right do 1 and 2.
1)
Label the x- axis, y- axis, origin and
4 quadrants on the coordinate plane.
2)
Indicate what signs each
coordinate of the ordered pair must
have to be in the 4 quadrants. Label directly
on coordinate plane.
3)
Exactly where in coordinate plane are the following ordered pairs located?
(quadrant, axis, origin)
a) ( -4 , 9)
b)( 10, 0 )
c) (14, -11)
d) ( 0, -16 )
4)
e) (0, 0)
Plot the given ordered pairs.
(Label with the designated letter)
A(3, -5)
B(0, 2)
5)
f) ( -7, -18)
Using the coordinate plane given, write
the ordered pairs for each point.
G( , )
H( , )
C(-1, -4)
D( -6, 0)
J(
,
)
K(
E(1, 3)
F(-3, 1)
L(
,
)
M(
,
)
,
)
J
H
K
M
G
L
Unit 5-0 Intro to graphing HOMEWORK
Exactly where in coordinate plane are the following ordered pairs located? (quad #, axis, or origin)
1)
(27, -89)
2)
(0, -19)
3)
(14, 34)
4)
(0, 0)
5)
(-66, -23)
6)
(-1,103)
7)
(126, -12)
8)
(-18, 0)
9)
(352, -353)
10) Plot the given ordered pairs on the same coordinate plane. Label the points with the
designated letter.
A( 13, 8)
B(-11, -6)
C(0, -5)
D(6, -7)
E( -15, 2)
F(0, 0)
G(2, 9)
H(9, 0)
I(8, 5)
J(-3, 2)
K(0, 7)
M(12, -8)
11) Using the coordinate plane at the right, write the ordered pair for each point.
A(
,
)
B(
,
)
C(
,
)
D(
,
)
E(
,
)
F(
,
)
G(
,
)
H(
,
)
J(
,
K(
,
)
L(
,
)
A
L
C
F
H
B
K
D
)
E
G
J
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