Question

.Find the value of k , if (1, -1) is a solution of the equation 3x – ky = 8. Also find x – coordinate of another point when y = 1/10 on its graph

Answer 1

3*1-k*1,=8

3+k=8

k=8-3

k=5

Answer 2

Step-by-step explanation:

substituting (1,-1) in the given equation

3x - ky =8

3(1) - k(-1) =8

k = 8-3

k = 5

(x, y) = (x, 1/10)

substituting in the equation

3x - 5y = 8. -( since k=5)

3x - 5(1/10) = 8

3x - 1/2 = 8

3x = 8 + 1/2

3x = 17/2

x = 17/2 x 1/3

x = 17/6

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