Can someone explain to me what type of graph this is?
i'd like to know:
1.) what graph is this?
2.) how would you determine the answer to the question/how would you read this graph?

explain the filled in circle, the line, and the non-filled in circle, etc.

Rewrite the hyperbolic equation 4y^2 -9x^2 +54x-8y-113=0

How many different three-digit numbers can be formed using the digits 1 comma 2 comma 9 comma 6 comma 4 comma 3 comma and 8 without repetition? for example, 664 is not allowed.

A. plot the data for the functions f(x) and g(x) on a grid and connect the points. x -2 -1 0 1 2 f(x) 1/9 1/3 1 3 9 x -2 -1 0 1 2 g(x) -4 -2 0 2 4 b. which function could be described as exponential and which as linear? explain. c. if the functions continue with the same pattern, will the function values ever be equal? if so, give estimates for the value of x that will make the function values equals. if not, explain why the function values will never be equal.