Intro to Functions

Is this a function? Explain.

• Yes; it passes the horizontal line test.

• No; it is not a straight line.

• Yes; it passes the vertical line test.

• No; it does not pass the vertical line test

Is this graph a function or not a function? 

• Function

• Not a Function 

f(x) is the same thing as ______.

• y

• x

• input

• an equation

Tags

CCSS.HSF.IF.A.1

If a question asks you to find f(2), what does that mean?

• Let x = 2

• Let y = 2

Tags

CCSS.HSF.IF.A.2

If f(x) = 2x + 1, find f(1).

• f(1) = 1

• f(1) = 4

• f(1) = 0

• f(1) = 3

Tags

CCSS.HSF.IF.A.2

Write the set of ordered pairs to represent the table.

• (6,-12), (3,-6), (0,0), (3,6), (6,12)

• (-12,6), (-6,3), (0,0), (6,3), (12,6)

• (-12,3), (-6,6), (0,0), (6,6), (12,3)

Tags

CCSS.HSF.IF.A.1

CCSS.8.F.A.1

Use the rule y=2x+5 to complete the missing value in the table

• 5

• 4

• 6

• -1

Tags

CCSS.HSF.IF.A.1

CCSS.8.F.A.1

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

• y = 2x-3

• f = 2x - 3

• f(x) = 2x-3

Tags

CCSS.HSF.IF.A.2

Is the relation a function?

• Function

• Not a Function

Is y a function of x?

• function

• not a function