Given { (x, f (x)) : (x, f (x)) = (-2, 0), (3, 4), (7, 12), (9, - 13) }, find the set of ordered pairs (x, 4[f (x) ]).

{ (x, 4f (x)) = (-2,0), (3, 16), (7, 48), (9, - 52) }

Step-by-step explanation:

We have the following set of ordered pairs:

(x, f (x))

(-2,0). So f (-2) = 0. That is when x = - 2, y = 0.

(3,4). So f (3) = 4. That is, when x = 3, y = 4.

(7,12). So f (7) = 12. That is, when x = 7, y = 12.

(9, - 13). So f (9) = - 13. That is when x = 9, y = - 13.

find the set of ordered pairs (x, 4[f (x) ]).

We just need to multiply the values of y by 4. So the set is

{ (x, 4f (x)) = (-2,0), (3, 16), (7, 48), (9, - 52) }