What is the common difference ratio between 2,8,14,20,26

Its 6 all you have to do is subtract 2 from 8 and then that give you 6 and then check it by subtracting 8 from 14

for this case we have by definition, if two lines are perpendicular, then the product of their slopes is -1.

then, given the following line:

so,

we are looking for m_ {2}:

then, the line is given by:

we find "b" replacing the given point:

finally, the equation is:

option c