Question

answer both the questions please​

Answer 1

Answer:

1. unique because the 8x-5y=7 and 5y-8x= -7
2. Given pair of Linear Equations are:

x +2y = 3

5x + ky +7= 0

The Given equations can be written rewritten as :

x +2y - 3 = 0

5x + ky +7= 0

On Comparing the Given eqs with standard form

a1x + b1y + c1 = 0 & a2x + b2y + c2= 0

Here, a1= 1, b1= 2 , c1= -3 &

a2= 5 , b2= k , c2= 7

A pair of linear equation has unique solution if ,

a1/a2 ≠ b1/b2

⅕ ≠ 2/k

k ≠ 10

So, the lines have unique solution for all real values of k except  

HOPE THIS WILL HELP YOU...

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Step-by-step explanation:

Answer 2

Answer:

1. here a1/A2 is not equal to b1/B2

unique solution

2. here is no solution

a1/A2=b1/b2not equal to c1/c2

5/1=k/2not equal to 7/3

k=10