Question

If the pair of linear equations 2x + 3y = 7 and 2px + py = 28 -qy has infinitely many
solutions, find the values of p and q​

Answer 1

Answer:

since,the given pair of linear equation infinitely many solution

so, a1/a2=b1/b2=C1/c2

2/2p=3/p-q =7/28

2/2p=7/28,3/p-q=7/28

1/p=1/4., 3/p-q=1/4

p=4 , p-q=12

4-q=12

q=4-12

q=-8