1) Is the following a function? a) Yes, this is a function. b) No, it's not a function. c) Can't be determined with this information. 2) Which of the following is NOT a function? a) b) c) d) 3) Which of the following is a function? a) b) c) d) 4) Is this a function or not a function? a) Function b) Not a Function 5) Is this a function or not a function? a) Function b) Not a Function 6) Is the relation a function? Why. a) Yes, because the x-value 11 has two y-values pair with it. b) Yes, because each x-value has only one y-value paired with it. c) No, because the x-value 11 has two y-values pair with it. d) No, because each x-value has only one y-value paired with it. 7) Is this a function or not a function? a) Function b) Not a Function 8) Is this a function or not a function? a) Function b) Not a Function 9) Is this a function or not a function? a) Function b) Not a Function 10) Which of the following is a function? a) b) c) d) 11) A vacation home in Orlando, Florida, rents for $105 per day. The function f (x) = 105x gives the cost of renting the home for x days. What is the domain of this function? a) x ≥ 0 b) {0, 105, 210, 315...} c) {0, 1, 2, 3, ....} d) all real numbers 12) Which is a linear function? a) {(-6, 6), (-3, 3) (0, 0) (3, 3) (6, 6)} b) {(-2, 6) (-1, 3) (0, 2) (1,3) (2, 6)} c) {(-2, 6) (-1, 3) (0,0) (1, -3) (2, -6)} d) {(6, -2) (6, -1) (6, 0) (6, 1) (6, 2)} 13) A health insurance plan has a $50 enrollment fee and a co-payment of $5 for each doctor visit. The function f(x) = 5x + 50 gives the cost of x doctor visits. What is the range of this function? a) {1, 2, 3, ....} b) {0, 1, 2, 3, .....} c) {5, 55, 105, 155,....} d) {50, 55, 60, 65....} 14) Determine whether the relation represents a function. If it is a function, state the domain and range. a) b) c) not a function 15) {(-3, -6), (0, 5), (5, -3), (6, -1)} Determine whether the relation represents a function. If it is a function, state the domain and range. a) b) c) not a function 16) Given the relation R = {(−4,2), (3,6), (x,8), (−1,4)} Which value of x would make this relation a function? a) -4 b) -1 c) 3 d) 0 17) A function is defined as {(0,1), (2,3), (5,8), (7,2)}. Isaac is asked to create one more ordered pair for the function. Which ordered pair can he add to the set to keep it a function? a) (0, 2) b) (5, 3) c) (7, 0) d) (1, 3) 

Identifying Functions

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