Q:
# What are opposite rays?

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### Quick Answer

**Two rays are opposite rays in geometry if they have a common initial point and form a straight line.** Essentially, these rays point in opposite directions. The common initial point is also called the end point of a ray.

The opposite arms of a straight, 180-degree angle are an example of opposite rays.

A ray is a set of infinite points. It has length but no width. It stretches indefinitely in one direction only. Two opposite rays stretch indefinitely in both directions. All points on these two rays are collinear points.

A ray is a subset of a line. It always lies in a plane. Two opposite rays are subsets of the line that they form.

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Q:
## How do you plot data on a map?

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Full Answer >**To plot data on a map, you have to place a point at the intersection of the correct distance in each direction.**A two-dimensional coordinate system usually involves placing the data point at the intersection between the x and y coordinates, or in literal maps, latitude and longitude.Filed Under: -
Q:
## How do you go from point-slope form to slope-intercept form?

A:To convert a point slope form equation to a slope-intercept form, you must simplify the equation. The simplified equation has "y" on one side of the equals sign and everything else on the other.

Full Answer >Filed Under: -
Q:
## What is a change in position with respect to a reference point?

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Full Answer >**Motion is defined as a change in position with respect to a reference point.**A reference point is a requirement for any description of motion as there is no real fixed point within the universe. This is the basis for Albert Einstein's Theory of Relativity.Filed Under: -
Q:
## What is a datum line?

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Full Answer >**A datum line is a point of reference or standard for comparison.**The term is primarily used in reference to surveying and engineering, where it is used in the measurement of depths and heights.Filed Under: