# 1819 H2Y §5.Practice Test

You can:
- Remove single and double brackets
- Write formulas without brackets
- Plot a parabola, identify upward/downward opening, axis of symmetry, vertex
- Solve quadratic equations
- Use all of the above in story questions
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Slide 1: Slide
WiskundeMiddelbare schoolhavo, vwoLeerjaar 2

This lesson contains 17 slides, with text slides.

Lesson duration is: 50 min

## Items in this lesson

You can:
- Remove single and double brackets
- Write formulas without brackets
- Plot a parabola, identify upward/downward opening, axis of symmetry, vertex
- Solve quadratic equations
- Use all of the above in story questions

#### Slide 1 -Slide

Remove single/double brackets
- You may use a multiplication table.
- In case of double brackets: combine like terms.

#### Slide 2 -Slide

Write formulas without brackets
- Write the part(s) with brackets without brackets.
- Combine like terms.

#### Slide 3 -Slide

Plot a parabola, etc.
- Before you plot a graph, make a table
- Remember to use brackets when squaring a negative variable!

#### Slide 4 -Slide

Plot a parabola, etc.

Plot all points from the table
Connect with a smooth curve

#### Slide 5 -Slide

Plot a parabola, etc
This parabola is upward opening
(other option is downward opening)

The pink line is the axis of symmetry, formula: x = 2
(Formula axis of symmetry is always x = ...)

The lowest points is called the vertex, coordinates: (2, -8)
(if the parabola is downward opening,
the vertex is the highest point)

#### Slide 6 -Slide

All quadratic equations have 2, 1 or 0 solutions.
Use cards to solve quadratic equations. Give exact answers.

#### Slide 7 -Slide

All quadratic equations have 2, 1 or 0 solutions.
Use cards to solve quadratic equations. Give exact answers.

#### Slide 8 -Slide

All quadratic equations have 2, 1 or 0 solutions.
Use cards to solve quadratic equations. Give exact answers.

#### Slide 9 -Slide

Stories
In the picture frame on the right
all 3 photo's are 10 by 15 cm.
The edges and spaces between
each photo are all the same width.

Make a formula with brackets for the total area A of the picture frame.

#### Slide 10 -Slide

Stories
In the picture frame on the right
all 3 photo's are 10 by 15 cm.
The edges and spaces between
each photo are all the same width.

Make a formula with brackets for the total area A of the picture frame.

#### Slide 11 -Slide

Stories
James wants to paint the frame.

Make a formula with brackets
for the area F of the picture frame
that he wants to paint.

#### Slide 12 -Slide

Stories
James wants to paint the frame.

Make a formula with brackets
for the area F of the picture frame
that he wants to paint.

#### Slide 13 -Slide

Stories
Write the formula without brackets

#### Slide 14 -Slide

Stories
The width of the sides is 2.5 cm.
What is the area James needs to paint?

#### Slide 15 -Slide

Stories
The width of the sides is 2.5 cm.
What is the area James needs to paint?

#### Slide 16 -Slide

HW Monday
Make and correct: Practice Test CH5 (in your workbook)
(You do NOT have to make exercise 5)