Reading/Interpreting Function Notation

• 2 is the input

• 5 is the independent variable

• there is no input

• 5 is the input

• 2 is the same as 5 and are both inputs

Select all that apply.

f(x) is the same thing as ______.

• y
• x
• input
• independent variable

• output

g(15) = -1
Convert to a coordinate point.

• (15, -1)

• (-1, 15)

• (1, 15)

• (-15, -1)

• (15, 1)

• 7

• 10

• neither 7 or 10

• h(x)

• both 7 and 10

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

• y = 2x-3

• f = 2x - 3

• f(x) = 2x-3

Using f(x) , g(x) , or h(x) instead of y is called using ......

• Slope Notation

• Variable Notation

• Intercept Notation

• Function Notation

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

• Let x = 2

• Let y = 2

If I know that f(2) = 4, what is another way I can write my answer?

• 2,4

• (2, 4)

• That is the only way to write it.

What is the definition of a function?

• Has inputs and outputs

• Every input has only ONE output

• Inputs have different outputs every time

• x-values and y-values

Is the relation a function? Why?

• Yes, because the x-value 11 has two y-values paired with it.

• Yes, because each x-value has only one y-value paired with it.
• No, because the x-value 11 has two y-values paired with it.

• No, because each x-value has only one y-value paired with it.