The first one
Step-by-step explanation:
the other ones are not statistical
I hope this helps!
Answer:
multiplied by 3
Step-by-step explanation:
red is scaled up by 3 from blue
ANSWER

EXPLANATION
The given line passes through the origin, hence it has equation of the form,

Therefore y varies directly as x.
The line passes through the point (3,1)
This implies that,


Hence the constant of variation is

The equation is
