Question

If the domain of the function F = 2x + y = 7 is {1, 2, 3), what is the range?

O {1,2,3}
O (1,3,5)
O {2,5/2, 3)

Answer 1

1,3,5

Explanation:

The domain is the set of all first elements of ordered pairs (x-coordinates).

The range is the set of all second elements of ordered pairs (y-coordinates).

Answer 2

Explanation:

y = 7 - 2x

x =1; y = 7 - 2*1 = 7- 2 = 5

x = 2; y = 7 - 2*2 = 7 - 4 = 3

x = 3; y = 7 - 2*3 = 7- 6 = 1

Range = { 1,3,5}