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Answer is A. -5/4

Perpendicular lines are the negative reciprocal of each other. A reciprocal is when the denominator and numerator is switched.

For example, y= 2x would be perpendicular to Y= - 1/2x

So in the situation the 5 and 4 are switched and then a negative sign would be added.

akayla1205

A.

You flip the fraction and the subtraction fromt the fraction and whole number makes it a negative. So negative 5/4