What’s the actual distance = yards?

The legend says 1 inch = 30 yards.

Multiply the total inches by 30 yards:

4 inches x 30 yards = 120 total yards.

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