3.1-3.3 Quiz - Functions

Determine whether the relation represents a function. If it is a function, state the domain and range.

• function; domain: {5, 10, 15, 20}; range: {25, 50, 75, 100}
• function; domain: {25, 50, 75, 100}; range: {5, 10, 15, 20}
• Not a function

Tags

CCSS.8.F.A.1

f(x) = 2x + 2; g(x) = 5x - 1 Find f ∙ g.

• (f ∙ g)(x) = 10x^2 - 2; {x|x ≠ -2}
• (f ∙ g)(x) = 7x^2 + 8x + 1; all real numbers
• (f ∙ g)(x) = 10x^2 + 8x - 2; all real numbers
• (f ∙ g)(x) = 10x^2 + 9x - 2; {x|x ≠ -2}

Tags

CCSS.HSF-BF.A.1B

Determine whether the graph is that of a function. If it is, use the graph to find its domain and range, the intercepts, if any, and any symmetry with respect to the x-axis, the y-axis, or the origin.

• function - domain: {x|-4 ≤ x ≤ 4}; range: {y|-4 ≤ y ≤ 4}; intercepts: (-4, 0), (0, -4), (0, 4), (4, 0); symmetry: x-axis, y-axis
• function - domain: {x|-4 ≤ x ≤ 4}; range: {y|-4 ≤ y ≤ 4}; intercepts: (-4, 0), (0, -4), (0, 4), (4, 0); symmetry: x-axis, y-axis, origin
• function - domain: {x|-4 ≤ x ≤ 4}; range: {y|-4 ≤ y ≤ 4}; intercepts: (-4, 0), (0, -4), (0, 0), (0, 4), (4, 0); symmetry: origin
• Not a function

Given the function f(x) = -4x^2 + 8x + 8, if x = 1, what is f(x)? What point is on the graph of f?

• 12; (1, 12)
• 12; (12, 1)
• -4; (1, -4)
• -4; (-4, 1)

Tags

CCSS.HSF.IF.A.2

The graph of a function is given. Decide whether it is even, odd, or neither.

• even
• odd
• neither

Tags

CCSS.HSF.BF.B.3

Determine algebraically whether the function is even, odd, or neither. f(x) = -5x^4 - x^2

• even
• odd
• neither

Tags

CCSS.HSF.BF.B.3

The graph of a function is given. Determine whether the function is increasing, decreasing, or constant on the given interval. (-4, -2)

• constant
• decreasing
• increasing