Question

What will be the slope of the line given by ax + by + c = 0?

(a) -a/b

(b) -b/a

(c) -c/a

(d) a/c

I got this question by my school principal while I was bunking the class.

The doubt is from Computational Geometry in chapter Computational Geometry of Data Structures & Algorithms II

Answer 1

The correct option is (a) -a/b

The best explanation: The slope of a line given by the equation ax + by + c=0 has the slope of -a/b. So two lines having the same ratio of the coefficient of x and y will be parallel to each other.