1. What can be said of points lying on the line through the origin, bisecting the 1st and 3rd quadrant?
Every point has the same x- and y- coordinates
On the line bisecting the 2nd and 4th quadrant?
The x- and y- coordinates of every point have the same absolute
value but opposite signs.
2. What do points on the line parallel to the X axis,
5 units above it, have in common?
All the points have the same y-coordinates, they are all 5.
3. What do points on the line parallel to the Y axis and 3 units to the left of it have in common?
All the points have the same x-coordinates, they are all -3.
4. What is the distance from the X axis to (7,-2)?
We draw a line straight to the X axis from (7,-2)
The line is 2 units long, so the distance to the X-axis is 2.
From the Y axis?
We draw a line straight to the Y axis from (7,-2)
The line is 7 units long, so the distance to the Y-axis is 7.
Edwin
