It’s multiplying by 4.
1x4=4
4x4=16
16x4=64
The slopes of two parallel lines must be identical.
We have slope

, so the slope for the parallel line be the same.
Now, to find an equation that also passes through the given point, we use slope-point form,

, where our point

is substituted for

.

Now, we convert to slope-intercept form as such.

And we are done. :) We can verify graphically that these are indeed parallel lines. See attached.
Answer:
Step-by-step explanation:
Well, you would use factorization for this, which would be MORE than 54 different codes! :D