6. a.give the domain and range for the function graphed below. Explain why this graph represents a function.
b. what is the y intercept of the function shown in the graph.
c. identify any extrema of the function shown in the graph.
![6 agive the domain and range for the function graphed below Explain why this graph represents a functionb what is the y intercept of the function shown in the g class=](https://us-static.z-dn.net/files/d1d/0bf1fffc1b1e5d4db8e6bdab84a943c3.jpg)