Question

Find the range of the function f(x) = −2x + 7 for the domain {-2, 3, 8}.

Answer 1

The range of function for domain {-2,3,8} is {11,1,-9}

Explanation:

Given function is:

`f(x) = -2x+7`

We have to find the range for given values.

To find the range, we will put the domain values one by one in the function to find the range.

So,

Putting x=-2, 3, 8

`f(-2) = -2(-2)+7 = 4+7 = 11\\f(3) = -2(3)+7 = -6+7 = 1\\f(8) = -2(8)+7 = -16+7 = -9`

The range of function for domain {-2,3,8} is {11,1,-9}