CPM Homework Help : A2C Problem 7-8

Make a table like the one below. Choose points in each of the locations listed at the top of the table and write in the coordinates of the points you have chosen.

	Points on the x-axis	Points on the y-axis	Points on the z-axis	Points not on the x-, y-, or z-axes
1^st point	( , , )	( , , )	( , , )	( , , )
2^nd point	( , , )	( , , )	( , , )	( , , )
3^rd point	( , , )	( , , )	( , , )	( , , )
4^th point	( , , )	( , , )	( , , )	( , , )

What do you notice about the coordinates of the points on the $x$ -axis?
Hint (a):
Remember that on a 2-D plane, any point on the $x$ -axis has $y$ -value of $0$ .
Answer (a):
The $y$ - and $z$ -values are always $0$ .
Make a conjecture about the coordinates of points that lie on any of the coordinate axes.
Hint (b):
See part (a).
Use the eTool below to explore.
Click the link at right for the full version of the eTool: 7-8 HW eTool