Inverses

What is the inverse of the function f(x)=4-2x

• f⁻¹(x) = 2x-½
• f⁻¹(x) = 2x+½
• f⁻¹(x) = 2+½x
• f⁻¹(x) = -2+½x

What is the inverse in the given coordinates {(18,6), (6,2), (27,9), (21,7), (15,5)}

• {(6,18), (2,6), (9,27), (7,22), (5,15)}
• {(6,18), (6,2), (9,27), (7,21), (5,15)}
• {(6,18), (2,6), (9,27), (7,21), (5,15)}
• {(6,18), (2,6), (9,27), (7,21), (15,15)}

What is the inverse in the given coordinates {(7,42), (9,54), (6,36), (2,12), (3,18)}

• {(42,7), (54,9), (36,6), (12,2), (18,8)}
• {(42,7), (54,9), (36,6), (2,12), (18,3)}
• {(42,7), (54,9), (6,36), (12,2), (18,3)}
• {(42,7), (54,9), (36,6), (12,2), (18,3)}

Tags

CCSS.HSF-BF.B.4C

What is the inverse in the given coordinates {(10,20), (7,14), (8,16), (5,10)}

• {(20,10), (14,7), (8,16), (10,5)}
• {(20,10), (14,7), (10,5), (16,8)}
• {(14,7), (8,16), (10,5), (20,10)}
• {(10,20), (14,7), (16,8), (10,5)}

What is the inverse of the function f(x)=x+2

• f⁻¹(x) = x-2
• f⁻¹(x) = x+2
• f⁻¹(x) = -x+2
• f⁻¹(x) = -x-2

Tags

CCSS.HSF-BF.B.4A

What is the inverse of the function f(x) = 2x-5

• f⁻¹(x) = ½x+5
• f⁻¹(x) = ½x+⁵/₂
• f⁻¹(x) = x+⁵/₂
• f⁻¹(x) = ½x-⁵/₂

Tags

CCSS.HSF-BF.B.4A

What is the inverse in the given coordinates {(3,18), (5,30), (10,60), (2,12)}

• {(18,3), (30,5), (60,10), (2,2)}
• {(18,3), (30,5), (10,10), (12,2)}
• {(18,3), (30,5), (60,10), (12,2)}
• {(18,3), (20,5), (60,10), (12,2)}

Find the inverse of f(x) = -4x - 12

• f^-1(x) = 4x - 3
• f^-1(x) = -1/4x - 3
• f^-1(x) = 1/4x + 3
• f^-1(x) = -4x - 3

Tags

CCSS.HSF-BF.B.4A

What does it mean to find the inverse of a function?

• the x's and y's are switched
• the x's and y's are divided by 2
• the x's and y's are made negative
• the x's and y's are the same

Tags

CCSS.HSF-BF.B.4A

f(x) = {(3, 7), (4, -2), (5, -1), (8, 7)}
Is f^-1(x) a function?

• Yes
• No
• No way to tell