# Direct Relationship

(Redirected from Positive Relationship)

**See:** Mathematical Relationship, Positive Relationship, Linear Relationship, Monotonic Function, Inverse Relationship.

## References

### 2011

- (Wikipedia, 2011) http://en.wikipedia.org/wiki/Direct_relationship
- In mathematics and statistics, a
**positive**or direct relationship**is a relationship between two variables in which change in one variable is associated with a change in the other variable in the same direction. For example all linear relationships with a positive slope are direct relationships. Such direct relationships are very widely used in science and mathematics.** - In a direct relationship, as one variable, say
**x**, increases, the other variable, say y, also increases, and if one variable decreases, the other variable decreases. The formula for a direct linear relation is- [math]y[/math] = [math]a[/math] +
*kx*, where**k**is positive constant and**a**is a constant.

- [math]y[/math] = [math]a[/math] +
- See for example temperature conversion, where two temperature scales are typically in a direct and linear relation.

- In mathematics and statistics, a