2Vtto Graph of linear functions

• Wiskunde
• Middelbare school
• vwo
• Leerjaar 2

Welcome to Mathematics.

Take out your laptop, book, notebook, pencil case, calculator.

Linear function

Consider the formula
The gradient is......

y=3x−2

1. y
2. 2
3. x
4. 3

Which one is a linear graph?

1. 
2. 
3. 
4. 

Par. 3.1 Theory A: The graph of a linear function

By the end of the lesson you should be able to draw the graph of a linear formula.

The graph of a linear function is a straight line.

To draw the graph, you make a table with three points.

The book says two, we make three. Just to be sure.

How to draw a linear graph (copy!)

1. Write down the formula
2. Draw a table like this:
   
3. Choose 0 for x, calculate y:
   
4. Choose two different numbers for x and calculate y again
   for example: 
5. Draw a coordinate plane (a.k.a. set of axes)
6. Plot the three points
7. Draw a straight line through the three points.

1. Describe a linear formula
2. Give an example of a linear formula
3. Explain the steps to take when asked to draw a linear formula

In the equation
when

y=​2​​1​​x+3

x=4

y=

1. 5
2. 4
3. 3

Let's draw one line of ex. 4 together 

• Write down the formula: y = 2x - 3
• Make a tabel with x and y and three columns
• Fill in 0 for the first x
• Calculate y for x = 0
• Choose two different values for x and calculate the y
• Draw a coordinate plain
• Plot the three points and draw the straight line through them

I can now make the exercises?

😒🙁😐🙂😃

This week's exercises

Basic route: 2, 3, 4, 5, 6, L1.

middle route: 2, 4, 5, 6, 7, L1

challenging route: 2, 4, 5, 6, 7, L1