Question

Value of 'k' for which the equations
2x - 3y + 10 = 0 and 3x + ky + 15 = 0 are coincident, is:​

Answer 1

Answer:

k=-4.5

Step-by-step explanation:

a1=2,b1=-3,c1=10

a1=3,b1=k,c1=15

2/3=-3/k=10/15

-3/k=10/15

-3×15=10k

-45=10k

-45/10=k

-4.5=k

Answer 2

Question = 2X-3y+10=0, 3X+ky+15=0

Expert Answer:

• For infinite solution, we know that a₁/a2b₁/b2 = C1/C2
• So, for the above pair of equations,
• 2/3 = -3/ k
• So, k = -9/2