I would say from an educated guess that it is 0. A straight line could avoid all quadrants if it were placed on the origins of the x and y axis.
If you have one straight line, there are an infinite number of planes in which it lies.
4
3, otherwise below that it just collapses to a straight line or even a point.
0.123456789
There is no least number.
If you have one straight line, there are an infinite number of planes in which it lies.
4
3, otherwise below that it just collapses to a straight line or even a point.
The absolute minimum number would be three values. If you have two or one, there are an infinite number of lines (straight or curved) which could be drawn through them on a graph. You would have no way of knowing which line was correct. If you have (at least) three values then you can see whether or not they form a straight line. In practice, you should have at least 5 or 6 values for your independent variable to be reasonably sure of the correct shape of the graph.
Set the points out along one straight line then one line will do the trick.
Food colouring is non nutritive and is not absorbed (at least not too much) in the body. This is why it passes straight through.
0.123456789
There is no least number.
Straight
a straight line
0.123456789
1,023,456,789