Question

a) Find the value of k, if x=2, y=1 is a solution of the equation 2x+3y=k

b) Check whether (1,1) is a solution of equation x-2y=4​

Answer 1

Answer:

a) k = 7

b) No, (1,1) is a solution of equation x-2y=4 is not correct.

Step-by-step explanation:

a) 2x+3y=k

Putting the value of the x and y, we obtain

2(2)+3(1)=k

4 + 3 = k

k = 7

b) x-2y=4

Given : (1,1) = (x, y)

Putting the value of x=1, we obtain

1-2y=4

-2y=4-1

-2y=3

y= -3/2

Hence, (x, y) = (1, -3/2)

It is incorrect.

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