function operations and inverses

f(x) = 9-3x
g(x) = 5x-7
Find f(x)+g(x). 

• 14x-10
• -8x+2
• 2x+2
• 2x-2

Tags

CCSS.HSF-BF.A.1B

f(x) = 4x+8
g(x) = x+3,
Find f(x) * g(x)

• 4x²+24
• 4x²+20x+24
• 4x²+12x+24
• 4x²+4x+24

Tags

CCSS.HSF-BF.A.1B

Evaluate f(t)=-2t²+ 1 for f(2)

• 9
  
• 17
• -17
• -7

Tags

CCSS.HSF.IF.A.2

Given p(x) = x - 2, find p(-4).

• -6
• 6
• 2
• -2

Tags

CCSS.HSF.IF.A.2

If f(x) = 2x² + 5x - 3, evaluate f(4).

• f(4) = 4

• f(4) = 49

• f(4) = 25

• f(4) = 55

Tags

CCSS.HSF.IF.A.2

are these inverse functions?

• no
• yes
• no way to tell

Tags

CCSS.HSF-BF.B.4B

Are these the graphs of two inverse functions?

• Yes
• No
• No way to tell

Are the graphs inverses?

• yes

• no

Tags

CCSS.HSF-BF.B.4B

Are the blue and red graphs inverse functions?

• Yes, the functions reflect over y = x

• No, they do not reflect over the x - axis.

• No way to tell from a graph

Tags

CCSS.HSF-BF.B.4B

To graph the inverse of a function...

• Rotate it around the origin

• Reflect it across the x-axis

• Reflect it across the y-axis

• Switch the x and y coordinates and plot the new points

Tags

CCSS.HSF-BF.B.4C