It is a graph of a proportional relationship if it is either: a straight lie through the origin, ora rectangular hyperbola.
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A function is linear if one variable is directly proportional to the other.
Two rectangles are similar if corresponding angles are equal and the corresponding sides are proportional.
Directly proportional. Greater speed - greater distance.
All fractions are proportional to some other fraction.
Proportional to what? And what is the function? Proportions; i.e. 2 by 4.
Two quantities are directly proportional if they increase or decrease at a constant rate or ratio. This means that as one quantity increases, the other also increases, and vice versa. Mathematically, this relationship is expressed as y = kx, where y is directly proportional to x, and k is the constant of proportionality.
Directly proportional means that both variables increase or decrease at the same time.
Corresponding in size or amount to something else.
Direct. For example, if a number is inversely proportional to something, it increase as the other one decreases. Ifa number is directly proportional to something, it increases as the other one increases.
If the graph is a straight line through the origin, sloping upwards to the right, then it is a proportional linear relationship.
It is a graph of a proportional relationship if it is either: a straight lie through the origin, ora rectangular hyperbola.
The greek letter "alpha" (α) for both. If x is directly proportional to y, you could say x α y. For inversely proportional, you would say something like x α 1/y, or x α y^-1, as in, directly proportional to the inverse.
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If it passes through the origin
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