Coordinate Plane

Coordinate Plane.  It is made up the X-axis (a horizontal number line) and Y-axis (a vertical number line). The X and Y axes intersect at the origin (0,0) and are perpendicular to each other.

We use ordered pairs of numbers (X, Y) to locate points in the plane. To find a point on the plane, first move horizontally along the x-axis and locate the X value;  then move vertically to locate the Y value; draw a point where they meed, as shown.

Coordinates of a point  (X, Y)
Coordinates give the position of a point on each axis of the Coordinate Plane.
Each coordinate gives the X-value first, followed by the Y-value.
Coordinates are written in parentheses separated by a comma.
The  coordinate plane has four quadrants which are labeled counter-clockwise (using Roman Numerals)

Intersecting Lines

Graphing Linear Equations

Graphing the X and Y Intercepts


Slope from a Table

Slope 3

Coordinate Plane Help

Slope Help’


Coordinate Plane Writing

Slope of a Line (Writing)


EQ06      Find the Slope 1

EQ08      Find the Slope 2

EQ07      Slope (given 2 points)

EQ09      Find the slope and the y-intercept

SE05       Create a Table given an Equation   


Cartesian Plane

A function represents a dependence of one quantity on another and can be described in a variety of ways. In this unit, in addition to deriving and interpreting y=mx and y=mx + b, students will represent directly proportional and linear relationships using verbal descriptions, tables, graphs, and formulas, and translate among these representations.



Linear Relationships_Writing










Roman Numerals

Roman numerals were used by the Romans as their numbering system. They are expressed by letters of the alphabet:

I = 1
V = 5
X = 10
L = 50
C = 100
D = 500
M = 1000




RO01 Roman Numerals (Read)

RO02 Roman Numerals (Write)






SE05   Create a Table given an Equation

EQ06  Find the Slope and Y Intercept given a Table

EQ07  Slope of a line through a pair of points

EQ06  Find Slope from function tables

SE05   Create Table for each rule


Linear Equations (Your Own Word Problem)

Slope Help


Find the slope and y-intercept From Graph MB1

Find the slope and y-intercept From Graph MB2

Find the slope and y-intercept From Graph  MB3

Find the slope and y-intercept From Graph  MB4


Find Slope from function tables