Calculate the 1st quartile of the data set below: 53, 54, 71, 95, 108, 110, 115, 120, 128, 128, 129, 141, 143, 158, 193

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