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How many points are needed to name a plane?
zero
How many points are needed to define a plane?
3
How many foci does a parabola have?
A parabola has a single focus point. There is a line running perpendicular to the axis of symmetry of the parabola called the directrix. A line running from the focus to a point on the parabola is going to have the same distance as from the point on the parabola to the closest point of the directrix. In theory you could look at a parabola as being an ellipse with one focus at infinity, but that really doesn't help any. ■
What is a parabola that opens to the right called?
It is a square root mapping. This is not a function since it is a one-to-many mapping.
Is a horizontal parabola a function?
No. Because apart from its apex, any point on the x-axis is mapped to two points - one above the x axis and one below. A function cannot be a one-to-many mapping.
How many points are needed to determine a unique line?
Two distinct (different) points are needed to determine a line.
How many vertices points and edges does a parabola have?
A parabola has one vertex (but not in the sense of an angle), infinitely many points and no edges.
How many noncollinear points are needed to determine a circle?
3
How many points are needed to determine a straight line?
You need two points to determine a line. A single point can have an infinite number of lines passing through it.
How many points are needed to draw a line?
A line contains an infinite number of points but it takes only two points to determine a line.
How many points are needed to determine a unique plane?
A plane can be determined by three points, as long as the three points do not lie along a single line.
what Navigation at sea requires the use of many points and lines to reference location and trajectory.What are the minimum points of reference needed to determine a trajectory (line)?
2 points
How many points are needed to determine a trajectory line?
To determine a trajectory line, only two points are needed. These two points can be used to calculate the slope, which represents the direction and angle of the trajectory. Additional points can be used to further refine the trajectory line and estimate its accuracy.
How many non-collinear points are needed to create a plane?
To create a plane, infinitely many. To uniquely determine a plane, just three.
How many points determine a line?
Two
How many points are needed to draw a straight line?
2 points
How many points determine one plane?
3
