domain is the x values
so assuming each grid is 1 unit
it goes from -4 to 5
so domain is [-4,5]
range is from lowest to highest
that is from 0 to 4
range is [0,4]
it is nof a function because we can draw a vertaical line and go thorugh the graph twice
domain: [-4,5]
range: [0,4]
not a function