Question

Which of the following statements are true about the function y = 3x?


The function is a direct variation.
The function goes through the origin.
The constant of variation is 1/3.
y is 6, when x is 2.
I and IV
I and II
I, II, and IV
I, II, III, and IV

Answer 1

I, II, and IV.

Explanation: y = 3x is a direct variation (k = 3), it passes through the origin (0,0), and y = 3·2 = 6. The constant of variation is 3, not 1/3.