# Power functions

Power functions
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Slide 1: Tekstslide
WiskundeMiddelbare schoolhavoLeerjaar 3

In deze les zitten 20 slides, met interactieve quizzen en tekstslides.

## Onderdelen in deze les

Power functions

#### Slide 1 -Tekstslide

Today
• Start (5 min)
• New subject (15 min)
• Bettermarks (15 min)
• Second part presentation (15 min)
• Bettermarks (25 min)
• End lesson (5 min)

Power functions
y=2x4
y=x19
y=3x6
y=0.25x7

#### Slide 3 -Tekstslide

Note 13.4 Power functions
Formula:
is called the coefficient and       the exponent

y=axn
a
n

Geogebra

#### Slide 5 -Tekstslide

Note 13.4 Power functions
timer
3:00

#### Slide 6 -Tekstslide

A
a is positive, n is even
B
a is positivey, n is odd
C
a is negative, n is even
D
a is negative, n is odd

#### Slide 7 -Quizvraag

Note 13.4 Power functions
If a graph is streched in the y direction, the graph moves towards the y-axis
If a graph is compressed in the y direction, it moves away from the y-axis
Streched:
Compressed:
a>1
a<1
timer
2:30

#### Slide 8 -Tekstslide

f is .... in comparison to g
A
Compressed
B
Streched

#### Slide 9 -Quizvraag

Bettermarks
• Work on 13.4
• 15 min
• Raise your finger if you have any questions or when you're finished
• Communicate in English please
timer
5:00

#### Slide 10 -Tekstslide

Second part
Go to LessonUp, you need your notebook

#### Slide 11 -Tekstslide

Solving power equations
x2=25

#### Slide 12 -Tekstslide

Solving power equations
x3=8

#### Slide 13 -Tekstslide

Solving power equations
x7=52

#### Slide 14 -Tekstslide

Solving power equations
x7=52
x=752

#### Slide 15 -Tekstslide

Solving power equations
x7=52
x=752

#### Slide 16 -Tekstslide

Solving power equations
x7=52
x=752
x  1.76

#### Slide 17 -Tekstslide

Note 13.4: Solving power equations
If the exponent is even, there are 0, 1 or 2 solutions
If it's odd, there is 1 solution

or
or
4x8+3=57
4x8=54
x8=13.5
x  1.38
x  1.38
x=813.5
x=813.5
timer
3:00

#### Slide 18 -Tekstslide

Solving power equations
x2=81
x5=81

#### Slide 19 -Tekstslide

Bettermarks
• Work on 13.4
• Until the end of the lesson
• Raise your finger if you have any questions or when you're finished
• Communicate in English please