Question

Find an ordered pair (x,y) that is a solution to the equation 2x - y = 9. Find x,y

Answer 1

(5,1)

Step-by-step explanation

Step 1

to find x and y , is to find the values such that

`\begin{gathered} 2x-y=9 \\ \text{isolate y} \\ 2x-9=y \\ \end{gathered}`

then, for example

x=5

`\begin{gathered} y=2x-9 \\ y=2\cdot5-9 \\ y=1 \end{gathered}`

(5,1)

then, replacing we can verify

`\begin{gathered} 2x-y=9 \\ 2(5)-1=9 \\ 10-1=9 \\ 9=9\Rightarrow true \end{gathered}`

I hope this helps you