5. Exercise problems V

On comparing the ratios $\frac{a_1}{a_2},\frac{b_1}{b_2}$ and $\frac{c_1}{c_2}$ find out whether the lines representing the following pairs of linear equations intersect at a point, are parallel or coincident:

 

(i) $5x – 4y + 8 = 0$ ; $7x + 6y – 9 = 0$

 

Given lines are  each other.

 

Therefore, the given pair of lines has

 

(ii) $9x + 3y + 12 = 0; 18x + 6y + 24 = 0$

 

 

(iii) $6x – 3y + 10 = 0; 2x – y + 9 = 0$