Parabolas (t1b)

• Wiskunde
• Middelbare school
• vwo
• Leerjaar 1

Parabolas

March 6th 2023

t1b

13:15

Log in, then phone down and sit and read!

Schedule

• Reading                                                              5 min
• Announcements + grades                       10 min
• Review: quadratic formulas
• Parabolas                                                        25 min
    Quizzes
• Practice (+ hw-check)                               30 min
• Wrap-up                                                             5 min

Announcements

• Test ch.5:
  SOM didn't work :(

Grades at the end of the announcements!

Announcements

• Don't forget about Got It!
  Deadline is coming fast...

70%               2F               Thursday before test week

Grades

Sorted by student no.

What happens when I fill in
x = 4 or x = -4
into a quadratic formula like

y=​2​​1​​x​2​​−4

1. The answers are different
2. The answers are the same
3. It depends on the formula
4. It's impossible to tell

Complete the table in your notebook.

In the book:

Copy and complete the table in your notebook.

Done quickly? Try to draw the graph...

1. The blue graph fits the table
2. The red graph fits the table
3. The orange graph fits the table
4. The green graph fits the table

More points, more parabola

How to draw a graph from a quadratic function

How to draw a graph

Step 1: MAKE A TABLE AND FILL IT IN 

Step 2: DRAW A COORDINATE SYSTEM

Step 3: PLOT THE POINTS FROM YOUR TABLE

Step 4: DRAW A SMOOTH CURVE

                THROUGH THE POINTS

Step 1

Step 2

Step 3

Step 4

How to draw a graph

Plot the points

Draw a curve

Make a table

Draw a coordinate system

How to draw a graph from a quadratic function

Given is the function

Draw the graph.

Step 1: MAKE A TABLE

Step 2: DRAW A COORDINATE SYSTEM

Step 3: PLOT THE POINTS FROM YOUR TABLE

Step 4: DRAW A SMOOTH CURVE 

                THROUGH THE POINTS

y=​2​​1​​x​2​​−2

How to draw a graph

Step 1: MAKE A TABLE

Step 2: DRAW A COORDINATE SYSTEM

Step 3: PLOT THE POINTS FROM YOUR TABLE

Step 4: DRAW A SMOOTH CURVE

                THROUGH THE POINTS

Practice (+hw-check)

Chapter 6.3:
Choose a route in 31 – 39

How to draw a graph

Step 1: MAKE A TABLE

Step 2: DRAW A COORDINATE SYSTEM

Step 3: PLOT THE POINTS FROM YOUR TABLE

Step 4: DRAW A SMOOTH CURVE

                THROUGH THE POINTS

Next 

lesson

Gooseboard!