6.3a - 6.3d Review

Which shows the commutative property?

• (3x + 2y) + z = z + (3x + 2y)
• 3x + (2y + x) = (3x + 2y) + z
• 3x + 2y = z
• 3x + 2y = 2y + z

Which property is shown below?
6 + (4 + 7) - z = (6 + 4 + 7) - z

• associative
• distributive
• commutative
• identity

Which property is illustrated?
-16x² + 8x = -2x(8x - 4)

• associative
• distributive
• commutative
• identity

Which function models the data?
(1, 4), (2, 1), (3, -2) (4, -5)

• f(x) = -3x + 7
• f(x) = -3x + 4
• f(x) = x - 3
• f(x) = 3x - 4

Which equation models the data?
(2, -4), (3, -9), (4, -16) (5, -25)

• f(x) = -x²
• f(x) = -2x
• f(x) = x - 5
• f(x) = x^-2

Find f(6) if f(x) = x² + 3x

• 54
• 36
• 39
• 16

Find f(-3) if f(x) = 2x² + 6x - 3

• -3
• 0
• 3
• 16

Find x if f(x) = -15 in the function below.
f(x) = 4x - 7

• x = -2
• x = -67
• x = -15
• x = 19

Does the graph represent a function?

• yes

• no

Do the points below form a function?
(1, 6), (3, 8), (3, 15), (4, 16) (5, 20)

• yes 
• no