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Is three distinct points always determine a line?
No, because Of any three points on a line there exists no more than one that lies between the other two.
How many points are needed to graph a linear equation Why is it always a good idea to use more points?
Two points are sufficient to uniquely determine a straight line. It is generally best to select point that are as far apart as possible. It is also a good idea to pick one extra point somewhere between the two extremes. It does not need t be exactly in the middle. This point acts as a check. If the three points are not in a straight line then there is an error in one of the calculations so you need to check back. If the points are in a line you should be OK. It is, of course, possible, that you made two (or more) matching errors but, hopefully, that is not very likely.
What is a set of points forming a straight path extending infinitely in one direction?
It would be a ray (one half of a line).In geometry "A set of points extending infinitely in one direction" is called a RAY.
How many points can opposite rays have in common?
One
The test is used to determine whether a function is one-to-one?
horizontal line
