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1-51.

The graph appears to be the linear function y = x + 2, with a hole at (1,3).

Just like the graph of y = x + 2, this function will go up (y →+∞) as we move to the right (x →∞)

Refer to the hint in part (a).

As the graph approaches the hole from the left (x → −1), what y-value does it approach?

Refer to the hint in part (c).