Question

If f(x) = x-5, evaluate each of the following. Type a numerical answer in the space provided.

f(-1)=
f(0) =
f(1) =
f(2)=
f(5) =
f(8) =

Answer 1

see explanation

Explanation:

substitute the values of x, situated inside the parenthesis into f(x)

f(- 1) = - 1 - 5 = - 6

f(0) = 0 - 5 = - 5

f(1) = 1 - 5 = - 4

f(2) = 2 - 5 = - 3

f(5) = 5 - 5 = 0

f(8) = 8 - 5 = 3

Answer 2

1. f(-1) = -6
2. f(0) = -5
3. f(1) = -4
4. f(2) = -3
5. f(5) = 0
6. f(8) = 3

Explanation:

1) Substitute x = -1 into f(x) = x - 5

• f(x) = x - 5
• f(-1) = (-1) - 5
• f(-1) = - 1 - 5
• f(-1) = -6

2) Substitute x = 0 into f(x) = x - 5

• f(x) = x - 5
• f(0) = (0) - 5
• f(0) = 0 - 5
• f(0) = -5

3) Substitute x = 1 into f(x) = x - 5

• f(x) = x - 5
• f(1) = (1) - 5
• f(1) = 1 - 5
• f(1) = -4

4) Substitute x = 2 into f(x) = x - 5

• f(x) = x - 5
• f(2) = (2) - 5
• f(2) = 2 - 5
• f(2) = -3

5) Substitute x = 5 into f(x) = x - 5

• f(x) = x - 5
• f(5) = (5) - 5
• f(5) = 5 - 5
• f(5) = 0

6) Substitute x = 8 into f(x) = x - 5

• f(x) = x - 5
• f(8) = (8) - 5
• f(8) = 8 - 5
• f(8) = 3