Are these scaled copies 2x3 and 4x6 yes or no?

If given an equation of a line such as -1/2x+6 how would you create an equation of a line parallel and perpendicula to this line that goes through another point such as (4,10)

Which of the following is most likely the next step in the series? a3z, b6y, c9x, d12w, е15v, f18u

X-intercept=-5 y-intercept=2 the equation of the line is