1) Determine whether the relation is a function. Explain your answer. If it is a function, state the domain and range. 1(-6, 1), (-3,-6), (4, -6), (4, -3)} 2) Determine whether the equation defines y as a function of x. x2 + y2 =9 3) Evaluate the function at the given value of the independent variable and simplify. f(x) =3x2 - 3x - 4; f(x - 1) 4) The function P(x) = 0.35x - 74 models the relationship between the number of pretzels x that a certain vend sells and the profit the vendor makes. Find and interpret P(1000). 5) Given the graph -6 -5 -4 -3 -2 -1 a. Determine the function's domain and range. There should be an arrow on the right end of the graph! b. Find f(1). c. Find the values of x such that f(x) = 1