Function Notation & Plotting Points

Lesson Presentation
Function Notation & Plotting Plots

Math Response

Solve when x = 7

y = 3x + 5

Type answer here

Correct Answer: 26

Deg^°

Rad

Math Response

Solve when x = 7

y = x²

Type answer here

Correct Answer: 49

Deg^°

Rad

Math Response

Solve when x = 7

y = - x - 9

Type answer here

Correct Answer: -16

Deg^°

Rad

Math Response

Solve when x = 7

y = $$\frac{49}{x}$$

Type answer here

Correct Answer: 7

Deg^°

Rad

Mathematicians often work with multiple functions at a time, function
notation is used to name specific functions.

The notation y = f(𝑥) defines a
function named f.

This indicates “f is a function of 𝑥.”
The letter 𝑥 represents the input
value or independent variable.

The letter y or f(𝑥), represents the
output value or the dependent
variable.

The notation f(𝑥) is read, “f of 𝑥.”

Math Response

$$ℎ(3)=x^2+5$$

Type answer here

Correct Answer: 14

Deg^°

Rad

Math Response

$$f(-2)=\left(x+2\right)^2-9$$

Type answer here

Correct Answer: -9

Deg^°

Rad

Math Response

$$g(3)=\frac{1}{2}\left(x+9\right)$$

Type answer here

Correct Answer: 6

Deg^°

Rad

Math Response

$$w(-1)=x^2+19$$

Type answer here

Correct Answer: 20

Deg^°

Rad

​To plot a point:
Step 1: you start at the origin, (0,0), center of the graph
Step 2. move left or right according to your x value (negative number move left, positive number move right)
Step 3. move up or down according to your y value (negative number move down, positive number move up)
Step 4. Plot the point at that spot

Graphing

Plot the point ( 0, 0)

Graphing

Plot the point ( -3, 4)

Graphing

Plot the point ( 5, 4)

Graphing

Plot the point ( -6, -9)

Graphing

Plot the point ( 7, -2)