What is the scale factor if the scale is 5inches = 1 yard?

1 inch to 7 and 1/5 inch

this is not an educational question, do not offer numerous points just for your own entertainment

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