Math and Arithmetic

# How do you tell if a graph is not proportional?

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## Related Questions

###### Asked in Math and Arithmetic, Algebra, The Difference Between

### What are the properties of proportional and non-proportional tables and graphs?

If two quantities are proportional, then they have a constant
ratio.
If the ratio is not constant, the two quantities are said to be
non-proportional.
Proportional will always go through the origin on a graph.
(0,0)
Graph will always be a straight line.
Non-proportional line does not go through the origin.

###### Asked in Math and Arithmetic, Algebra

### Do all linear equations need to be proportional?

No.
A directly proportional graph has an equation of the form y = mx.
It always passes through the origin.
A linear graph will have an equation in the from y = mx + c. This
has a y-intercept at (0, c). It doesn't pass through the origin
unless c = 0. The directly proportional graph is a special case of
a linear graph.

###### Asked in Math and Arithmetic, Algebra, Calculus

### How can you know if a graph represents a proportional relationship?

It is a relationship of direct proportion if and only if the
graph is a straight line which passes through the origin.
It is an inverse proportional relationship if the graph is a
rectangular hyperbola. A typical example of an inverse proportions
is the relationship between speed and the time taken for a
journey.

###### Asked in Math and Arithmetic

### What is Graph proportions?

Straight line graphs that go through the origin, like the one
immediately below, show that the quantities on the graph are in
direct proportion. This straight line graph really tells two
stories. If you can say that A is directly proportional to B, then
you can state that B is directly proportional to A. The above works
out the same.