HV1 introduction formulas

HV1 formulas
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Slide 1: Diapositive
WiskundeMiddelbare schoolvwoLeerjaar 1

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HV1 formulas
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Slide 1 - Diapositive

login with your first name 

use the code below

Slide 2 - Diapositive

wordformulas

example

money raised = 4 + 5 • hours of work


Slide 3 - Diapositive


formula
money raised = 4 + 5 • number of hours


important :
use the order of operations
fixed number
variable/ certain number

Slide 4 - Diapositive

what is the fixed number in this example
temperature = 21 + 3 • number of hours
A
21
B
3
C
there is no fixed number
D
temperature

Slide 5 - Quiz

what is the variable number in this example
temperature = 19 + 5 • number of hours
A
19
B
5
C
there isn't a variable number

Slide 6 - Quiz

what is the variable number in this formula
money = 14 • number of hours + 12
A
14
B
12
C
this isn't a formula
D
too bad peanutbutter

Slide 7 - Quiz

................... =  ................ + ..................... • ......................
11
income
3.50
number of hours

Slide 8 - Question de remorquage

how can you write this formula as a letter formula?
money raised = 8 + 2.50 • number of laps run

Slide 9 - Question ouverte

Letter formulas


important:
letters instead of words (write what they stand for)
5d means 5*d
you fill in the value of the letter to calculate
m = 8 + 2.50l
where m stands for the amount of money and l stands for the number of laps

Slide 10 - Diapositive

a = 5 and b = -3

Evaluate a + b - 7

A
-15
B
-9
C
-5
D
I have no idea how to do this

Slide 11 - Quiz

p = 2 and q = -5

Evaluate 5p : q
A
-2
B
-10.4
C
2
D
I have no idea how to do this

Slide 12 - Quiz

Coordinate plane
important:
first x-coordinate, then y-coordinate
Origin is the point (0, 0)
Quadrants I, II, III, IV

Slide 13 - Diapositive

The point A(-3 , 0) is on the...
A
x-axis
B
y-axis
C
not on the x-axis or the y-axis

Slide 14 - Quiz

Give the coordinates of point K, that is 7 to the right and 3 down from point A(-3, 9).
A
K(-10, 12)
B
K(4, 6)
C
K(-6, 16)
D
K(10, 6)

Slide 15 - Quiz

Drawing graphs
how to draw a graph from a formula
1) make a table
2) draw a coordinate system
 use your table to decide the proper steps on the axes
3) draw in the points from the table in the coordinate system
4) draw a line through the points

draw with pencil (potlood)
use your protractor triangle

Slide 16 - Diapositive

The formula for the length of a candle is l = 40 - 5h
Fill in the table.
Done? Draw a graph by this formula.
0
h
l
40
35
1
8
0

Slide 17 - Question de remorquage

To which extent do you feel capable of drawing a graph?
😒🙁😐🙂😃

Slide 18 - Sondage