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How many ordered pairs are needed to draw a straight line?
In order to draw a straight line, two unique ordered pairs are needed. This is because two unique points determine a line and an ordered pair represents a point.
Is single point an straight line?
No because a defined straight line has 2 end points.
Which is longest a line segment a ray or a line?
A straight line may be extended in either direction indefinitely. A ray is the part of the straight line beginning at a given point and extending limitlessly in one direction. A line segment is a part of the straight line between two of its points, including the two points.
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 the straight line that comes closest to the points on a scatter plot?
line of best fit
