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Two variables are proportional to one another if there is a simple relationship, of the following form:
The variables X and Y are in
direct proportion if Y = c*X
and
inverse proportion if Y = d/X or, equivalently, X*Y = d
for some non-zero constants c and d, called the constants of proportionality.
Note that if Y is inversely proportional to X, then Y is directly proportional to the variable 1/X
The graph of a direct proportion is a straight line through the origin, with slope = constant of proportionality.
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What is the relationship between a math term and a math expression?
A math expression is a collection of math terms
What does proportional mean in math terms?
In math, proportional means that two quantities always have the same relative size. For example, the lengths of these two shapes are proportional (one shape's length is always twice as large as the other.)
What is proportional linear relationship in math?
The graph of a linear proportion will be a straight line passing through the origin. The equation will have the form y = mx, also written as y = kx.
How can you represent a proportional relationship using an equation?
You cannot represent a proportional relationship using an equation.
Does the graph represent a proportional or non-proportional liner relationship How do you know?
If the graph is a straight line through the origin, sloping upwards to the right, then it is a proportional linear relationship.
