Question

Is (9, -1) a solution of x+5y=4

Answer 1

To find out input (9, -1) into x + 5y = 4.

Where x = 9, and y = -1:

\(x + 5y = 4\)
\(9 + 5(-1) = 4\)
\(9 - 5 = 4\)
\(4 = 4\)

So \('(9, -1)'\) is a solution to \('x + 5y = 4'\).