Answer: A) y=1/5x Step-by-step explanation: Coz, the way you identify a perpendicular line is by looking for its negative reciprocal. The neagtive reciprocal of 5= 1/5 Now, to check the ans we can multiply the negative reciprocal by "m" (m in y=mx+c or y=mx+b) in this case the "m" is stated as 5, so all we need to do is 1/5*5 if the ans is 1 then your ans is right....and over here it is So thats how you identify & check perpendicular lines!
