Question

How do you determine whether (6,4) is a solution of 7x+9y=2?

Answer 1

NO

Explanation:

We have, `7x+9y=color(red)(2)`
For (6,4), we take `x=6 and y=4` in LHS.
So, `LHS=7(6)+9(4)=42+36=78!=color(red)(2)`
Hence, `LHS!=RHSrArr(6,4)`, is not a solution of 7x+9y=2

Answer 2

If a given plane point is solution of a linear equation, then it verifies the equation#. Lets see

Explanation:

`(6,4)` are the coordinates of a plane point where the first is the value of x, and the second one is the value of y.

`7·6+9·4=42+36=78!=2`. Then, the given point is not a solution of `7x+9y=2`