COORDINATE POINTS & COORDINATE PLANE

MATH VOCABULARYCoordinate plane

Formed by two intersecting lines (named X and Y)

OriginThe middle/center of the coordinate, also known as (0, 0)

[the START point when graphing]

AxisThe intersecting lines that form a coordinate plane

Ordered pairA given point based on a specific “coordinate” by order of x and y

Quadrant Sections of the graph

COORDINATE PLANEWhen graphing points…

*always recognizeQuadrant

*graph left right on x-axis THEN up/down [following] y-axis

(alphabetical order!! x before y)

COORDINATE PLANE

Four sections:

Quadrant I*upper right of graph*points (+x, +y)

Ex. (3, 5)

COORDINATE PLANE

Four sections:

Quadrant II*upper left of graph*points (-x, +y)

Ex. (-2, 4)

COORDINATE PLANE

Four sections:

Quadrant III*lower left of graph*points (-x, -y)

Ex. (-5, -2)

COORDINATE PLANE

Four sections:

Quadrant IV*lower right of graph*points (+x, -y)

Ex. (3, -1)

PRACTICEGraph AND label:

a) (-2, 1)

b) (4, 3)

c) (-5, -4)

d) (2, -4)

e) (0, -5)

f) (3, 0)

HOMEWORK

p. 52-54 #1-8 all, 47-50 graphs, 62-67 all (skip #63)