Show:
Radius/Diameter
Proportion
Time
Distance = Time x Speed
100
If the diameter is 10cm, the radius is
5cm
100
How to tell if a graph is proportional by looking at it...
1. It starts at the origin

2. It is a straight line

100
How many seconds in one hour?
3600 seconds
100
You are driving 80km/h. How far do you go in 2 hours
80 x 2 = 160 km
200
The radius is 32cm, the diameter is...
64cm
200
How to tell if a graph is proportional using the coordinates...
Pick a coordinate, and divide the Y by the X


Example: If the coordinate is (5,10), the proportion is 10 divided by 5 = 2

200
The amount of time passed from 9:15-12:05
2 hours and 50 minutes
200
You walk 5,5km/h for 9 hours. How far do you walk...
5,5 x 9 = 49,5 km
300
The formula for circumference of a circle
C = Pi x diameter

or

C= Pi x radius x 2

300
Are these coordinates proportional?


1,7

2,14,

3, 20

4, 28

No, each coordinate does not equal 7 when divided
300
1 and 1/4 hour is how many minutes...
75 minutes
300
You leave your house at 7:00am and arrive at 11:30am. If you travelled 22,5km how fast were you going?
7:00 - 11:30 = 4.5 hours


22,5 / 4,5 = 5km/h

400
The circumference of a circle if the diameter is 40cm
125.6 cm
400
4 movie tickets cost 420kr. 10 tickets cost would cost...
1050kr
400
You get in the car at 10:45am and arrive in a new city at 17:30. How long were you driving?
6 hours and 45 minutes
400
You go 40km/h and travelled 10km. How long were you travelling?
10km / 40km/h = 0.25 hours or 15 minutes
500
The circumference of a circle if the radius is 22cm
138.16cm
500

3 months - 750kr
6 months - 1500kr
9 months - 2250kr


In 4 years, how much money would you get?

12000 kr
500

You start a marathon at 8:45 and it takes 6 hours and 22 minutes. You finish the marathon at...

15:07
500
You were moving 20km/h and went 110km. If you left at 13:45, when did you arrive?
110km / 20km/h = 5,5 hours.


13:45 + 5,5 hours = 19:15