Activity 1. Describing Positions of Points

YOUR TASK

[b]Describe the position of a point [/b]on a plane using their coordinates. [br][b]Describe the meaning[/b] of mathematical words related to points.[br][b]Plot points[/b] on a plane given their coordinates. [br][b]Give examples[/b] of points that are on a line.[br][br] [br]

The video below explains how the position of a point is described in terms of their coordinates.

CHECK your comprehension

How many numbers do you need to describe the coordinates of a point on a numberline?

3 none 2 4 1

How many numbers do you need to describe the position of a point on a plane?

4 2 3 1

Describe what you understand about the following words from the video. Use the TEXT TOOL (Tt) to type your answer.

You may use this applet to answer the next questions about sets of points.

Which three points are positioned in one straight line?

(0,0) (7,1) (5,0) (7,5) (1,7) (5,7) (1,5) (7,0)

Give examples of coordinates of three or more points that are in one horizontal line in a coordinate plane.

JUSTIFY

Explain why you think the three or more points that you gave are in one horizontal line.