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Page 24 – Graphing
With Coordinates
Objective
 Plot points and lines on a coordinate
plane.
Why? Just as locations can be related to each other
with a map, graphing provides a picture of how
two variables relate to one another.
Glossary Terms
Quadrants – the four regions created when a plane is divided
by a horizontal and a vertical number line
coordinate plane – the plane consisting of the 4 quadrants
x-axis – the horizontal number line
x-coordinate – numbers on the x-axis
y-axis – the vertical number line
y-coordinate – the numbers on the y-axis
Origin – the intersection of the x- and y-axes
Coordinates – the numbers associated with the positioning of the
points on the axes
ordered pair – the coordinates of a point in a designated order (x, y)
Key Skills
Graph an equation by plotting points.
Make a table for the equation y = x + 1.
Find the values for y by substituting 1, 2, 3, 4,
and 5 for x.
y= 1 +1= 2
x
y
1
2
2
3
3
4
4
5
5
6
Key Skills
Graph an equation by plotting points.
Make a table for the equation y = x + 1.
Find the values for y by substituting 1, 2, 3, 4,
and 5 for x.
y= 2 +1= 3
x
y
1
2
2
3
3
4
4
5
5
6
Key Skills
Graph an equation by plotting points.
Make a table for the equation y = x + 1.
Find the values for y by substituting 1, 2, 3, 4,
and 5 for x.
y= 3 +1= 4
x
y
1
2
2
3
3
4
4
5
5
6
Key Skills
Graph an equation by plotting points.
Make a table for the equation y = x + 1.
Find the values for y by substituting 1, 2, 3, 4,
and 5 for x.
y= 4 +1= 5
x
y
1
2
2
3
3
4
4
5
5
6
Key Skills
Graph an equation by plotting points.
Make a table for the equation y = x + 1.
Find the values for y by substituting 1, 2, 3, 4,
and 5 for x.
y= 5 +1= 6
x
y
1
2
2
3
3
4
4
5
5
6
Key Skills
Graph an equation by plotting points.
Graph the ordered pairs and connect the points
to make a line.
x 1 2 3 4 5
y 2 3 4 5 6
TOC
Assignment
 Page 27 – 29
· # 24 – 52, 60 - 65