Which of these equations represents a line that has an undefined slope and is perpendicular to the line represented by y = 5?
A x = 5
B y = 0
C y = −5
D No such line exists.

1. isolate the variable, in this case, d. subtract 35.5 on both sides of the equation.2. 52 subtracted by 35.5 is 16.53. therefore your answer would be d= 16.5this is the basics of pre algebra, isolating variable through adding, subtracting, multiplying, and dividing, if you have any other questions to ask just comment!