Function Notation Evaluation

How would you write y = 2x - 3 in function notation?

• y = 2x-3

• f = 2x - 3

• f(x) = 2x-3

If f(x) = 2x + 1, what would be your first step to find f(1)?

• Plug a 1 in for all the x's

• Set the function equal to 1

• Only plug a 1 into the left side

• Only plug a 1 into the right side

How do you read f(x)?

• f x

• f of x

• f parenthesis x

• f with an x inside parenthesis

f(x) is the same thing as ______.

• y

• x

• input

• an equation

Mathematical Equivalence

ON

______

Mathematical Equivalence

ON

If f(x) = 10x - 4, solve for f(3).

• f(3) = 22

• f(3) = 26

• f(3) = 30

• f(3) = 34

What is the value of x in:
f(4) = 3x - 1

• 11

• 4

• -1

• 0

If g(x) = 1 - 3/4x,

7. g(-12) = ​ (a)  

8. g(0) = ​ (b)  

9. -5 times g(4) - 1 = ​ (c)  

• 10

• 1

• 9

• -1

• -9

• You can handle the fraction!

If f(x-1)=2x+3 for all values of x, what is the value of f(-3)

• -7

• -5

• -3

• -1