Please help me i need help :/

A is perpendicular with C, but NOT B. B is also perpendicular but not with A.

Step-by-step explanation:

Lines have to form a 90 degree angle with another line to be perpendicular, and you can use that judgement to figure out which one is perpendicular.

step-by-step explanation:

if u want da anser kill your teeser ifu hav wun

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value