What is direct and Inverse proportion? NCERT Class 8 Maths

Direct Proportion: Assume that you have added more books to your bag. How will its weight change? and will get bigger. It will, of course, thus we refer to it as a direct ratio. It is possible to use the two measurements x and y, which are thought to be directly proportional. What does that mean, exactly? This implies that the ratio of these two dimensions, x and y, will constantly rise and fall by their corresponding values.

An equation will allow us to comprehend this. If x and y vary directly, then x/y = k, where k is a positive value or a constant

For example, 1 cm is equal to 10 mm.

Here, to convert to cm, the product must be 10.

Now let's talk about inverse proportions. When changing the value of one dimension, x, causes a corresponding reduction in the other, y, and vice versa, the two dimensions, x, are inversely proportional. Examples include the duration and speed of a travel. It is argued that two values are inversely proportionate when one rises and the other falls. Another application of the proportional symbol is possible. Take this as an example: We are aware that adding additional workers to a task can speed up its completion.

This is described as:

Number of workers (1/Duration of the project)

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Direct and Inverse Proportions for Grade 8 maths

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