Question

Select all of the following that are ordered pairs of the given function.

f(x) = 3 - 2x

(-2, -1)
(-1, 5)
(0, 3)
(1, 0)
(2, -1)

Answer 1

you should replace x with the first number of the pair, do the arithmetic and see if the answer matches the 2nd number in the pair. if it does, that pair "works"

Answer 2

just substitute the points to see which one is true, example you have point
(-2,-1)
equation F(x) = 3 - 2x
-1 = 3 - 2(-2)
-1 = 3 + 4
-1 = 7 NOT TRUE