Answer:
The equation that represents direct variation is [tex]y=3x[/tex]
Step-by-step explanation:
The general equation of a direct variation is of the form,
[tex]y=mx[/tex].
The constant m is referred to as the constant of proportionality or the constant of variation.
The graph of a direct variation is a straight line that passes through the origin, which has coordinate [tex](0,0)[/tex]
The equation that represents a direct variation among the options provided is
[tex]y=3x[/tex]
Therefore the correct answer is option A.
