How would I find the two points I need??
Just plug in the x values and see if we can get the associated y values
So...(1, - 3) ??? y = (1) - 4 = - 3 OK
And (-1, -5) ??? y = (-1) - 4 = - 5 OK
So....the points (1, - 3) and (-1, - 5) are on the graph