Which ordered pair could be removed so that the set of ordered pairs is a function?
a. (4, –2)
b. (–3, 2)
c. (3, 4)
d. (1, 1)

Option b is correct.

Step-by-step explanation:

We do vertical line test to check the whether given expression is function or not and it will be a function if we get  different value of y for each x

So, we can clearly see through the graph that at (-3,-3) and (-3,2) we are getting two different values at same point

hence, we should remove (-3,2) so that ordered pair is a function

Therefore, option b is correct.

a)(x-2)^2+(y-1)^2=9

step-by-step explanation:

(picture explains)

it would rotate about 180 degrees.