Apea seller had some peas. he sold 40% of his stock and still had 420 peas. originally, he had how many peas?

100-40= 60%

60% = 0.60

420/0.60 = 700

he had 700 peas

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