Question

How do you follow the system of equations `2x+y=1` and `x--2y=-7` by graphing?

Answer 1

see below

Explanation:

The equations are

1.) `2x+y=1`
2.) `x-(-2y)=-7` that gives `x + 2y=-7`
put some values for `x` in each equation to get corresponding values for `y` in each equation

like in equation 1
let `x=1`
`2(1)+y=1`
`y=1-2`
`y=-1`
similarly put another values for x and you will get corresponding values for y .
(if you want me to add those values in answer just mention once in comments , i'll update the answer)

the graph looks like

if it doesn't zoom see this
https://www.desmos.com/calculator/owvequfhjl