Question

Using the domain values {-1, 0, 4}, how do you find the range values for relation y=2x-7?

Answer 1

See a solution process below:

Explanation:

To find the Range of the equation given the Domain in the problem we need to substitute each value in the Range for `x` and calculate `y`:

For `x = -1`:

`y = 2x - 7` becomes:

`y = (2 xx -1) - 7`

`y = -2 - 7`

`y = -9`

For `x = 0`:

`y = 2x - 7` becomes:

`y = (2 xx 0) - 7`

`y = 0 - 7`

`y = -7`

For `x = 4`:

`y = 2x - 7` becomes:

`y = (2 xx 4) - 7`

`y = 8 - 7`

`y = 1`

Therefore the Domain is `{-9, -7, 1}`