The given equation is expressed as
x - y = 4
we need to make y the subject of the equation. We would add y to both sides of the equation. We have
x - y + y = 4 + y
x = 4 + y
We would subtract 4 from both sides of the equation. Wehave
x - 4 = 4 - 4 + y
x - 4 = y
y = x - 4
We would substitute values of x into the equation and find corresponding values of y. we have
If x = - 2, y = - 2 - 4 = - 6
If x = - 1, y = - 1 - 4 = - 5
If x = 0, y = 0 - 4 = - 4
If x = 1, y = 1 - 4 = - 3
If x = 2, y = 2 - 4 = - 2
We would plot the corresponding x and y values on the graph as shown below