Unit 3 Retake review: function notation and arithmetic seq.

Is this a function?

• Yes

• No

• Maybe

• It's a curvy line

Is this a function?

• Yes

• No

• Maybe

• I like circles

Is this mapping a function or not a function? 

• Function
• Not a Function 

Tags

CCSS.8.F.A.1

Is the relation a function? 
{(4,5), (4,-7), (4,2), (4,0), (4,9)}

• Yes
• No

Tags

CCSS.8.F.A.1

For the function f(x) = -3x + 3 find f(0).

• 0
• -3
• 3
• -1

Tags

CCSS.HSF.IF.A.2

Evaluate f(-2) if f(x) = x²+ 3.

• -1
• 1
• 7
• -7

Tags

CCSS.HSF.IF.A.2

Solve for x:
f(x) = 75
f(x) = 25x

• x = 75
• x = 25
• x = 3
• x = 4

f(x)=2x+1
If f(x)=4, what is the value of x?

• 3/2
• 2
• 1/2
• 4

Tags

CCSS.HSF.IF.A.2

f(x)=x²+1

g(x)=2x-5

Find f(x)-g(x)

• x²-2x+6

• -x²+2x+4

• -x²-2x-6

• x²-2x-4

f(x) = 3x + 10

g(x) = x - 2

Find f(x) + 2g(x)

• 5x+8

• 5x+6

• 7x+18

• None of these.