Question

4. The value of k for which the system of equations x +
y - 4 = 0 and 2x + ky = 3, has no solution, is
(a) - 2
b) #2​

Answer 1

Answer:

a)-2 is right answer

Step-by-step explanation:

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Answer 2

Answer:

• K = 2

Given:

• x +y - 4 = 0

• 2x + ky = 3

Solution:

• x + y - 4 = 0
• 2x + ky = 3
• So 2x + ky = 3 becomes 2x+ ky - 3 = 0

As we know that:

For no solution

• a1/a2 = b1/b2 ≠ c1/c2

Then,

● x / 2x = y / ky

● 2xy = kxy

● k = 2

Hence no solution is k = 2

Explanation more:

• No solution means there is no number that can substituted to the make the equation true
• Example : x + 8 = x+3 = 8 ≠ 8 so, 8 is not equal to 3 then its no solution