Which of the following functions is a direct variation?

f (x) = 2x

f (x) = x + 2

f (x) = 2

Question

Mathematics

Jenny Wall

7 February, 17:46

Which of the following functions is a direct variation?

f (x) = 2x

f (x) = x + 2

f (x) = 2

+1

Answers (1)

Know the Answer?

Deven Willis · Answer 1

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 ... simply when the y-intercept is zero.

So the best answer is f (x) = 2x

Which of the following functions is a direct variation?f (x) = 2xf (x) = x + 2f (x) = 2

Which of the following functions is a direct variation?

f (x) = 2x

f (x) = x + 2

f (x) = 2