Question

Given the function:

f = {(1, 3), (2,5), (3, 7), (4,9)}
Which of the following represents the inverse function, f-1?
O (-3,1).(-5,2).(-7,3).(-9,4)
O (3,1),(5,2).(7,3).(9.4)
0 (-1,-3).(-2,-5).(-3,-7).(-4,-9)
0 (-1,3),(-2,5).(-3,7).(-4,9)

Answer 1

O (3,1),(5,2).(7,3).(9.4)

Explanation:

`.`

Answer 2

`\\ \bull\tt\dashrightarrow f=\left\{(1,3),(2,5),(3,7),(4,9)\right\}`

Now

• Just flip

`\\ \bull\tt\dashrightarrow f^(-1)=\left\{(3,1),(5,2),(7,3),(9,4)\right\}`