Section 1
The Coordinate Axes
Property
A coordinate grid is formed by two perpendicular number lines called axes. The horizontal axis is called the x-axis, and the vertical axis is called the y-axis. Their point of intersection is called the origin.
In this Grade 5 lesson from Pengi Math Chapter 9, students learn to navigate the coordinate plane by identifying the x-axis, y-axis, and origin (0, 0) as the foundation for locating points. Students practice reading and plotting ordered pairs (x, y) in the first quadrant, understanding why the order of coordinates matters when moving horizontally before vertically. The lesson also covers how to interpret points that fall on an axis when one coordinate is zero and how to verify accuracy by reading coordinates back from the graph.
Section 1
The Coordinate Axes
A coordinate grid is formed by two perpendicular number lines called axes. The horizontal axis is called the x-axis, and the vertical axis is called the y-axis. Their point of intersection is called the origin.
Section 2
Ordered Pairs
We write the coordinates of point inside parentheses as an ordered pair. The order of the coordinates makes a difference. We always list the horizontal coordinate first, then the vertical coordinate.
An ordered pair is like an address for a point on a graph. The first number tells you how far to move along the horizontal axis, and the second number tells you how far to move up or down the vertical axis.
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Section 1
The Coordinate Axes
A coordinate grid is formed by two perpendicular number lines called axes. The horizontal axis is called the x-axis, and the vertical axis is called the y-axis. Their point of intersection is called the origin.
Section 2
Ordered Pairs
We write the coordinates of point inside parentheses as an ordered pair. The order of the coordinates makes a difference. We always list the horizontal coordinate first, then the vertical coordinate.
An ordered pair is like an address for a point on a graph. The first number tells you how far to move along the horizontal axis, and the second number tells you how far to move up or down the vertical axis.
Book overview
Jump across lessons in the current chapter without opening the full course modal.
Continue this chapter