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Q: Why do you use a line graph illustrating direct proportion?
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What On a graph which type of line shows a direct proportion?

straight line


How can you determine if a graph forms a direct proportion?

If it is a straight line through the origin then it represents a direct proportion.


What is a graph of a direct proportion?

A kind of weird line that is straight.


Does a graph showing direct proportion always have to be a straight line?

Assuming both the scales on the graph are linear (that is to say that the numbers go up evenly) then YES, a graph which shows direct proportion must be a straight line. It must also pass through the origin (0,0). A straight line which does not pass through the origin is NOT showing direct proportion. Duncan


On a graph which type of line shows direct proportion?

This graph states, therefore, that A is directly proportional to B. It also states that ... thus showing that this straight line through the origin represents a direct proportion. ... what you are talking about, because there are other types of proportions.


Why the straight line in the graph doesn't start from zero?

Unless it is a direct proportion, the straight line does not have to start from zero.


What is the characteristics of a rate?

It represents a direct proportion and whose graph is a straight line through the origin.


If the relationship between the manipulated variable and the responding variable is a direct proportion. What will a line graph of this look like?

straight line


If the relationship between the manipulated variable and the responding variable is a direct proportion what will a line graph of this relationship look like?

Straight line.


How do you determine direct and inverse proportion on graphs?

If the variables x and y are in direct proportion then the graph of y against x is a straight line through the origin. If the variables x and y are in inverse proportion then the graph of y against x is a rectangular hyperbola. Alternatively, the graph of y against 1/x (or 1/y against x) is a straight line through the origin.


What does a direct proportion look like on a graph?

A straight line, through the origin, sloping up from left to right. The gradient of the graph will be the constant of proportionality.


Which type of line shows a direct proportion?

Which type of line shows a direct proportion