When looking at a function graph, which value determines whether a graphed relation is a function or not? Domain or Range? Explain why.

In two or more complete sentences, formulate how to use technology to calculate the appropriate regression model for the given data. you are not required to find the model, just choose the appropriate regression and explain how to use the technology. (-5,,2.,0.8), (0,-0.5), (2,-1.3), (3,-0.8), (5,2)

Which system of linear inequalities is represented by the graph?

I’m stuck on this equation, anyone got the answer?