Question

Which table shows the inverse of the function
?

-2 -8
-1 -3
0 2
1 7
2 12


Responses

-2 8
-1 3
0 -2
1 -7
2 -12


x y -2 8 -1 3 0 -2 1 -7 2 -12

-2 12
-1 7
0 2
1 -3
2 -8


x y -2 12 -1 7 0 2 1 -3 2 -8

-8 -8
-3 -3
2 2
7 7
12 12


x y -8 -8 -3 -3 2 2 7 7 12 12

-8 -2
-3 -1
2 0
7 1
12 2

Answer 1

The inverse swaps x and y. Swapping each pair gives:

(-8, -2), (-3, -1), (2, 0), (7, 1), (12, 2)

So the last table is the inverse.