Identify whether each set of ordered pairs is a function or is not a function.

Step-by-step explanation:

To be a function, the x or first number of the pairs can not duplicate. It needs to pass the vertical line test.

A. not a function

B. function

C. function

D. not a function

E. not a function

for any of you who need the translation here it is

step-by-step explanation:

find the angular size of the equatorial radius of the earth, if the horizontal parallax of the sun

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