Direct and Indirect relationships


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305339018
Posts: 51
Joined: Sat Aug 24, 2019 12:18 am

Direct and Indirect relationships

Postby 305339018 » Thu Oct 10, 2019 10:22 pm

How would we able to identify if two variables have a direct or indirect relationship? I'm very confused on this.

Bradley Whitworth 4B
Posts: 54
Joined: Sat Jul 20, 2019 12:17 am

Re: Direct and Indirect relationships

Postby Bradley Whitworth 4B » Thu Oct 10, 2019 10:35 pm

In simple terms, looking at a graph for example, two variables have a DIRECT relationship if as one increases the other also increases, the relationship between two variables is INDIRECT if as one increases the other decreases. A common example in chemistry could be the relationship between wavelength and frequency; as frequency increases wavelength decreases hence they're indirectly related.

Tai Metzger 3K
Posts: 103
Joined: Sat Aug 24, 2019 12:17 am

Re: Direct and Indirect relationships

Postby Tai Metzger 3K » Thu Oct 10, 2019 11:32 pm

A more mathematical way of describing this uses the following equations:
If x*y = k (constant) than x and y are inversely proportional because y=k/x, where if x increases than y decreases.
Conversely, if y/x = k than x and y are directly proportional because y=kx, where if x increases than y increases as well.


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