This table defines a function.
x 7 10 13 16
y 21 30 39 48
Which table represents the inverse of the function defined above?
A.
x -21 -30 -39 -48
y 7 10 13 16
B.
x 21 30 39 48
y 7 10 13 16
C.
x -7 -10 -13 -16
y 21 30 39 48
D.
x 7 10 13 16
y -21 -30 -39 -48
The inverse of a function swaps the values of x and y.
In the original function, when x is 7, y is 21.
Therefore, in the inverse, when y is 7, x should be 21.
Looking at the options, option B matches this criteria:
x 21 30 39 48
y 7 10 13 16
Therefore, option B represents the inverse of the original function.