Question

If (7, -2) is a solution of the linear equation 2x + 5y = k, then the value of k is

Answer 1

Answer:

4

Step-by-step explanation:

2(7)+5(-2)=k

14-10=k

4=k

Answer 2

Answer:

k = 4

Step-by-step explanation:

( x, y ) = ( 7, -2)        _______<i>

2x + 5y = k             _______<ii>

putting the value of ( x, y) in <ii>,

2(7) + 5(-2) = k

k = 14 - 10

[ k = 4 ] Ans.