1. which set of ordered pairs in the form of (x, y) does not represent a function of x? (1 point)
a. (1, 1.5), (2, -1.5), (3, 1.5), (4, 1.5)
b. (0, 1.5), (3, 2.5), (1, 3.3), (1, 4.5)
c. (1, 1.5), (-1, 1.5), (2, 2.5), (-2, 2.5)
d. (1, 1.5), (-1, -1.5), (2, 2.5), (-2, 2.5)

here is your mark brainliest

first, we define the variables:

x: number of years after 1950

f (x): amount of vinyl sold.

then, with the variables defined, we have:

68594 vinyl records were sold in 1958 > f (8) = 68594

91299 vinyl records were sold in 1961 > f (11) = 91299

38720 vinyl records were sold in 1952 > f (2) = 38720

161743 vinyl records were sold in 1967 > f (17) = 161743

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step-by-step explanation: