Representing and Interpreting Functions

The graph of a function must passed the ____________ line test.

Which set of coordinates is NOT a function?

• (5,10) (2, -3) (8,12) (-4, 2)

• (5, 10) (2, 10) (3, 10) (-4, 10)

• (5, 10) (2, -3) (8, 12) (2, -4)

• (10, 5), (-3, 2) (12, 8) (2, -4)

• Function
• Not a Function

Is this graph a function? How did you know?

• No, using vertical line test.

• Yes, using horizontal line test.

• Yes, using its table of values.

• Yes, using the mapping diagram

• Function
• Not a Function

Function or not a function

• function

• not a function

What is the definition of function?

• Has inputs and outputs

• Every input has only ONE output

• Inputs have different outputs every time

• x-values and y-values

Tell whether the relationship is a function

• Function

• Not Function

Dorothy loves to make cakes.  The following table shows how the number of eggs that she has left changes as she makes cakes.
What is the meaning of the y-intercept?

• She uses 5 eggs for every 2 cakes.

• She started with 47 eggs.

• She uses 47 eggs for every 0 cakes.

• She started with 5 eggs.

What is the meaning of the y-intercept?

• The weight in the bucket increases by 1 pound per pound of sand.

• Before sand is put in the bucket, it weighs 1 pound.

• The starting weight of the sand is 1 pound.

• The weight in the bucket decreases by 1 pound per pound of sand.