(a)y=4/9x-2 ( b)y=2x-4/9 (c) y=-1/2x+4/9 (d)y=1/2x-4/9?

determine which two equations represents perpendicular lines. (A) (a) and (b)


(B) (b)and(c)


(C)(a)and (d)





(D)(c)and (d)

(a)y=4/9x-2 ( b)y=2x-4/9 (c) y=-1/2x+4/9 (d)y=1/2x-4/9?
When 2 lines are perpendicular, it means that their slopes are reciprocals of each other. That means that if one equation's slope is 5x than the other equation's slope needs to be -1/5x in order to be perpendicular.


So in answer to your question the two equations that represent perpendicular lines is B. b and c.


Hope this helps!