The first section.
Yes, almost all the time. And when it is not coordinate planes it is coordinate hype-spaces (more than just the 2 dimensions that the coordinate plane allows).
All points with a 0 for the x coordinate is the y axis.
All the real numbers between 1 and 0. 0.0000001,0.000000001,0.0000000000012345265262527363736372763,etc.
Whereas the procedure for a linear equality is the same, the inequality defines all of the plane on one side (or the other) of the corresponding line.
All the planets stay approximately in one plane - the plane of the ecliptic. So if you have the x-coordinate normal to that plane their x-coordinates will stay small. It is more usual to have the z-coordinate normal to the plane.
A coordinate grid has just one large section displaying data varying from (0,0) to (infinity,infinity). On the other hand, a coordinate plane is much different. A coordinate plane has four sections, (+,+), (+,-), (-,+), and (-,-). Theese four sections are all in oposite corners of a grid. I hope this helped!!
the x-coordinate is 0, apex :)
The first section.
Yes, almost all the time. And when it is not coordinate planes it is coordinate hype-spaces (more than just the 2 dimensions that the coordinate plane allows).
All points with a 0 for the x coordinate is the y axis.
The coordinates of all points in the coordinate plane consist of ordered pairs of numbers.
the y-coordinate is 0.
They are all of the infinite number of points whose x-coordinate is zero.
All the real numbers between 1 and 0. 0.0000001,0.000000001,0.0000000000012345265262527363736372763,etc.
Scale factor
It is because all measurements are taken from that point: it is the fixed point of reference.