3ATA H 1.2 lineaire formules present

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WiskundeMiddelbare schoolhavo, vwoLeerjaar 3

This lesson contains 19 slides, with interactive quizzes and text slides.

time-iconLesson duration is: 60 min

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Slide 1 - Slide

Assignments
O13, O17, T18, A22, O24, O27, A32

Slide 2 - Slide

In the former lesson you practised .....
Solving lineair equitaions! 
  • ....apply the PEMDAS procedure (refer to page 14) 
  • ...the former from the top of your head!

Slide 3 - Slide

today's menu: lineair formulas
p.e: These maths are required for programming a taximeter 
Tariff 1 : EUR 1,50/minuut.  For a ride into the suburbs, the me metr switches herself to EUR 1,50/km  (GPS or mileage)


Slide 4 - Slide

Slide 5 - Slide

Our mutual target for this lesson:
  • explain the meaning of the word "Gradient" and/or "slope"
  • explain the meaning of the word "y-intercept"
  • calculate the gradient and the y-intercept
  • draw the line  l: y=ax+b for various values of a and b
  • find the equation from a set of given coordinates P and Q
  • check if a coordinate is positioned on the line "l"

Slide 6 - Slide

Slide 7 - Slide

Slide 8 - Slide

Parallel lines

Slide 9 - Slide

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Slide 10 - Slide

Slide 11 - Link

compose a line's formula

Slide 12 - Slide

zelf doen
Bepaal RC (a), startgetal (b)
Denk aan:
  • modelformule......................
  • snijpt. x-as............................
  • twee punten op de lijn kiezen en de rc bepalen
  • vul in de modelformule

Slide 13 - Slide

Slide 14 - Slide

Slide 15 - Link

Apply you knowledge

Slide 16 - Slide

A line contains P(1,100) and Q (2,-50).
The slope is (1) very large and
(2) positive
A
1=True, 2 =True
B
1=True, 2=False
C
1=False, 2=True
D
1=False, 2=False

Slide 17 - Quiz

"l" and "m" are parallel lines. The slope is zero (0). What is the value of "a" in l: y=ax+b?
A
Not sufficient info
B
a=90 degrees
C
a=0
D
a= not defined, because extremely large

Slide 18 - Quiz

Line "m" intercepts the y-axis at P(0,8) and the x-axis at Q(8,0). What is the formula for this line?
A
y=-x+8
B
y=x+8
C
y=-8x+0
D
y=8x+8

Slide 19 - Quiz