Question

If the domain of y = 2x + 3 is {1, 2, 3), then the range would be:

{5,7,9}
{-5,-7,-9)
{-1,-2,-3)
{1,2,3}

Answer 1

{5,7,9}

Explanation:

To find the range, all we do is just plug in the values of the domain for x to find y which is the range.

{1,2,3}

y = 2x+3

y = 2(1) + 3 = 5

y = 2(2) + 3 = 7

y = 2(3) + 3 = 9

The range is {5,7,9}