# If the line ax+y=c is perpendicular to the line x-by=d, then b=?

If the line ax+y=c is perpendicular to the line x-by=d, then b=

I just need help trying to figure it out. Explaining the process really.

### 1 Answer

Relevance

- 8 years ago
dude no. no. just no.

those are not evne real lines.

lines have numbers in them. a and c and b and d have to be replaced WITH REAL NUMBERS.

there is no way to know without numbers, as those lines are not lines.

a line has only two unknowns - x and y.

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