Determine whether the relation is a function. Explain 4. (7, 4), (5, -1), (3, -8), (1, -5), (3, 6)
6. Input x Input y (-10 and -8 connect to 1, -6, -4, and -2 connect to 2)
-10 1
-8 2
-6
-4
-2
8. Input x ) -3, 0, 3, 6, 9
Input y ) 11, 5, -1, -7, -13
18. The function y = 3.5x + 2.8 represents the cost y (in dollars) of a taxi ride of x miles.
a. identify the independent and dependent variables.
b. you have enough money to travel at most 20 miles in the taxi. Find the domain and range of the function.
20. y = √6 - x
22. y = 8 / x - 1
24. Input x ) 1, 2, 3, 4, 5
Input y ) 6, 7, 8, 6, 9
Correct- The relation is not a function. One output is paired with two inputs.
26. Correct- the relation is a function. The domain is 1, 2, 3, 4, 5, 6, 7, 8, and 9.