Question

Two straight paths are represented by the line 7x-5y=3 and 21x-15y=5 check wether the paths cross each other. Pls fast it's an exam question, very important.

Answer 1

7/21=-5/-15 is not equal to -3/-5. ( if u write the equation by making RHS as 0. since the ratio 7/21 and -5/-15 is same. only y intercept is different . . lines are parallel to each other..
hence the path of two lines will never intersect each other.