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

Oct 16, 2017

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 $x = - 1$:

$y = 2 x - 7$ becomes:

$y = \left(2 \times - 1\right) - 7$

$y = - 2 - 7$

$y = - 9$

For $x = 0$:

$y = 2 x - 7$ becomes:

$y = \left(2 \times 0\right) - 7$

$y = 0 - 7$

$y = - 7$

For $x = 4$:

$y = 2 x - 7$ becomes:

$y = \left(2 \times 4\right) - 7$

$y = 8 - 7$

$y = 1$

Therefore the Domain is $\left\{- 9 , - 7 , 1\right\}$