Graphs
Proportional equations
Proportional reasoning
Constant of proportionality
100
From the following 2 points on a graph what is the constant of proportionality? (0,0) and (4,1)
1/4
100
Write an equation for the proportional table.
y = 65x
100
k = _____
y/x
100
What is the constant of proportionality (unit rate)?
Stacey hikes 12 miles in 3 hours and 20 miles in 5 hours.
4 miles per hour
200
What is the constant of proportionality for the graph with the following points? (2,4)(3,6)
2/1
200
What does the equation mean for the following problem. y = 65x
Each hour the car goes 65 miles.
200
If I had 2 pens for every 3 pencils. How many pens would I have if I had 60 pencils?
40 pens
200
What is the constant of proportionality (unit rate)?
y = 3/4x
3/4
300
What is the following point on the graph called? (0,0)
Origin
300
Write an equation to represent the proportional graph.
y = 2x
300
Bracelets are on sale for 3 for $15. How much do 5 bracelets cost?
$25
300
What is the constant of proportionality?
75 miles per minute
400
2 characteristics a graph has to have for the relationship to be proportional?
1. Go through the origin (0,0)
2. Be a straight line
400
The constant value of the ratio of two proportional quantities x and y; usually written y = kx, where k is the factor of proportionality.
Constant of Proportionality
400
A map scale is 1 inch to 100 miles If I go 3.5 inches on the map, How many miles did I go?
350 miles
400
You lucked out
Free points!
500
An investor doubles his money each year. Is this proportional?
No
500
You lucked out
Free points!
500
If I make a trail mix with 5 parts nuts and 3 parts raisins,
And I had a total of 160 oz of trail mix, how many oz of nuts are in the mix?
100 oz
500
What is the constant of proportionality?
5 feet per second