Question

2x - 7y = 5
6x - ky = 15
lor coincident line
Find the k.​

Answer 1

Answer:

k =21

Step-by-step explanation:

coincident lines ( Infinitely many solutions)

2/6 = 7/k ( by cross multiplication)

2k = 42

k= 21

Answer 2

Step-by-step explanation:

• multiply eq 1 by 3
• add eq 1 & 2
• 6x–21y=15
• + 6x–ky=15
• 21ky2=0
• k=7