I was absent today in school and thats what they were learning in math so I have no clue what that is. Can someone explain it to me or what it means?
2006-09-11 11:57:13 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
direct variation (də′rekt ′ver·ē′ā·shən)
(mathematics) A relationship between two variables wherein their ratio remains constant. An equation or function expressing such a relationship.
2006-09-11 12:26:02 · answer #1 · answered by Anonymous · 0⤊ 0⤋
hen two variable quantities have a constant (unchanged) ratio, their relationship is called a direct variation.
It is said that one variable "varies directly" as the other.
The constant ratio is called the constant of variation.
The formula for direct variation is y = kx,
where k is the constant of variation.
"y varies directly as x"
Solving for k:
(y = numerator; x = denominator)
Example:
The weekly salary a woman earns, S, varies directly as the number of hours, h, which she works. Express this relation as a formula.
Answer: S = hk or (where k is the constant)
2006-09-11 18:59:13 · answer #2 · answered by Anonymous · 0⤊ 0⤋
When two variable quantities have a constant (unchanged) ratio, their relationship is called a direct variation.
It is said that one variable "varies directly" as the other.
2006-09-11 18:59:03 · answer #3 · answered by DanE 7 · 0⤊ 0⤋
Direct variation is when you have a linear equation with no constant term: Y=ax. They say that y varies directly with x.
2006-09-11 19:06:54 · answer #4 · answered by bruinfan 7 · 0⤊ 0⤋