Relations, Functions, & Compositions

For what intervals of x is f(x) decreasing?

• (-∞,-1)

• (-1,∞)

• (6,∞)

• (-∞,6)

Find the domain of g(x):

• (-∞, +∞)
• [-3, 3]
• (-∞, -3] U [3, +∞)
• [3, +∞)

Is this mapping a function or not a function?

• Function

• Not a Function

Tags

CCSS.8.F.A.1

Given f(x) = 2x and g(x) = x²+3 , find f(g(x)).

• x²+2x+3
• 4x²+3
• 2x²+3
• 2x²+6

Tags

CCSS.HSF-BF.A.1C

Find the domain of h(x):

• (-∞, +∞)
• (-∞, -2) U (-2, ∞)
• (2, ∞)
• [-2, ∞)

Tags

CCSS.HSF.IF.B.5

Where is the function decreasing?

• (4, ∞)

• (-∞,4)

• (-4, ∞)

• 4 < x < 6

Tags

CCSS.HSA.REI.D.10

What is the domain of the graph?

• y≥1
• x ≥ 1
• All real numbers
• none of these

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.B.5

Which set of values is a function?

• (9,5) (10,5) (9,-5) (10,-5)

• (3,4) (4,-3) (7,4) (3, 8)

• (6,-5) (7, -3) (8, -1) (9, 1)

• (2, -2) (5, 9) (5, -7) (1, 4)

Tags

CCSS.8.F.A.1

Is this function even, odd, or neither.

• Even

• Odd

• Neither

• Please explain this to me.

h(x) = 3x + 3
g(x) = -4x + 1
Find (h + g)(10)

• -6
• 6
• 82
• -72