Week 2

Evaluate the function. Find f(-1) when f(x) = x^2 - 2x - 7

-4

Evaluate the function. Find f(-3) when f(x) = 2x^2 + 3x + 5

14

Evaluate the function. Find f(k) when f(x) = 3x^2 + 4x + 5

3k^2 + 4k + 5

Evaluate the function. Find f(k - 1) when f(x) = 4x^2 - 3x + 4

4k^2 - 11k + 11

Function

Decide whether the relation defines a function.

Not a function

Decide whether the relation defines a function.

Function

Decide whether the relation defines a function. Annual New Telemarketing Companies

(-∞, -3) ∪ (-3, ∞)

Determine the intervals of the domain over which the function is continuous.

Decide whether the relation defines a function. y^2 = 5x

Not a function

Decide whether the relation defines a function. {(-5, 1), (-3, -6), (3, -3), (3, 5)}

Not a function

2

The graph of y = f(x) is given. Use the graph to find the function value. Find f(-2).

0

The graph of y = f(x) is given. Use the graph to find the function value. Find f(-3).

Evaluate the function. Find g(a + 1) when g(x) = 1 x + 5. 5

a+26 5

Give the domain and range of the relation. xy = 8

domain: (-∞, 0) ∪ (0, ∞); range: (-∞, 0) ∪ (0, ∞)

Give the domain and range of the relation. y = -7 x-6

domain: (-∞, 6) ∪ (6, ∞); range: (-∞, 0) ∪ (0, ∞)

Give the domain and range of the relation. y = 3x^7

domain: (-∞, ∞); range: (-∞, ∞)

Give the domain and range of the relation. y = square root of 4x-5

domain: |5 , ∞) ; 4 range: (-∞, ∞)

Increasing (-∞, 4]; Decreasing [4, ∞)

Determine the intervals of the domain for which the function is increasing, decreasing, and constant.

Increasing [0, ∞); Decreasing (-∞, 0]

Determine the intervals of the domain for which the function is increasing, decreasing, and constant.

Increasing for all reals; Decreasing never

Determine the intervals of the domain for which the function is increasing, decreasing, and constant.

(-∞, ∞)

Determine the intervals of the domain over which the function is continuous.

[-3, ∞)

Determine the intervals of the domain over which the function is continuous.

7

Evaluate the function. Find f(12)

Decide whether the relation defines a function. y = 5x - 2

Function

Decide whether the relation defines a function. y = x^2

Function

Decide whether the relation defines a function. {(-3, -4), (-1, 4), (4, -7), (7, 4)}

Function

Decide whether the relation defines a function. y= 5 x-1

Function

domain: [-3, 0]; range: [-5, -1]

Give the domain and range of the relation.

domain: [0, ∞); range: [3, ∞)

Give the domain and range of the relation.

domain: [1, ∞); range: (-∞, ∞)

Give the domain and range of the relation.

domain: {4, 7, 12}; range: {5, 8, 13}

Give the domain and range of the relation.

range: (-∞, ∞); domain: (-∞, ∞)

Give the domain and range of the relation.

Give the domain and range of the relation. y = (x + 4)^2 - 4

domain: (-∞, ∞); range: [-4, ∞)

Give the domain and range of the relation. {(1, 9), (-1, -9), (-7, -5), (6, -9)}

domain: {-7, -1, 1, 6}; range: {-9, -5, 9}