Proportional relationships
Proportional or not
Unit rate
Ratios
Miscellaneous
100
What "shape" does a graph have to be in order to be proportional?
A line!
100
Is the equation proportional or not?
y=4x
It is proportional
100
Find the unit rates for the following problems:
27 calls in 9 hours
What is 3 calls per 1 hour
100
In geometry class, the girl to boy ratio is 9 to 4. If there are 45 girls, how many boys are there?
What is 20 boys
100
In a picture, a snake measures 4 in. long. The scale is 1 in. = 2 ft. Find the actual length of the snake.
What is 8 ft.?
200
On a graph, the line has to go through what to be proportional?
What is the origin, or the point (0,0)?
200
Is this a proportional relationship? If yes, what is the constant of proportionality? If no, why not?
What is no because the ratio of y to x is not constant
200
21 yards of yarn costs $42. What is the price per yard?
What is $2 per yard
200
For every 3 chocolate chip cookies that Angel bakes, he bakes 2 oatmeal raisin cookies. If he bakes 80 oatmeal raisin cookies, how many chocolate chip cookies did he bake?
What is 120 chocolate chip cookies
200
Two rectangles are similar. The length of the larger rectangle is 18 cm. and the width is 6 cm. The length of the smaller rectangle is 12 cm. Find the width of the smaller rectangle.
What is 4 c m.?
300
Is this equation proportional? If so what is the constant of proportionality? (K=?)
y=-4x
Yes, and k=-4
300
Which machine is a proportional relationship and what is the constant of proportionality?
What is machine Q and a constant of proportionality of 6
300
Spenser bought 5 chocolate bars for $3.70. What is the unit price for 1 chocolate bar?
What is $0.74 per 1 chocolate bar
300
Five shovels of sand are mixed with 4 shovels of gravel to make cement. How many shovels of gravel are needed for 45 shovels of sand?
What is 36?
300
Ari can walk 2 miles in 40 min. How may minutes will it take him to walk 5 miles?
What is 100 min.?
400
Another name for constant of proportionality
What is unit rate?
400
The expression 2n - 3 gives the number of tiles in row "n" of a pattern.
Is this a proportional relationship?
No
400
You took a trip to the mountains and traveled 486 miles. It took you 18 gallons of gas to get there. How many miles per gallon did you go?
What is 27 miles per gallon
400
For every 4 books that Kenisha reads, she reads 3 magazines. If she read 21 magazines, how many total publications did she read?
What is 49
400
The equation "d = 55t" gives the distance in miles, "d", that a car can travel in "t" hours. How long will it take to go 247.5 miles?
What is 4.5 hrs.?
500
On a graph, which point represents the constant of proportionality?
The point (1, y)
500
Is this graph proportional? 
Yes
500
Find the unit rates:
4 miles/ 1/4 hour= x miles / 1 hour
What is 16 miles
500
The ratio of cats to dogs that are in the shelter is 5 to 3. If there are 48 total animals, how many more are cats?
What is 12 more cats than dogs
500
It is the missing word in the definition: Similar figures have corresponding angles that are congruent and corresponding sides that are ___________.
What is "proportional?"