A
B
C
D
100
A relationship is proportional if two quantities have a constant ratio or rate.
True or False
True
100
Find the y-intercept of the following equation:
y = –9x + 15
15
100
It takes Bob 11 days to make 88 ceramic mugs. How long will it take him to make 112 mugs?
14 days
100
Find the slope from the graph below.
3/4
200
What does the scale factor tell us when we are looking at a dilation?
How many times bigger or smaller the new image is.
200
A bike shop rents bikes for $20 per hour. In addition, there is a $15 service charge. Is the number of hours you can rent the boat proportional to the total cost?
No, because of the service charge.
200
The coordinate plane below shows figure NOPQ and its dilated image N’O’P’Q'. Is the dilated image an enlargement or reduction?
reduction
200
Find the y-intercept from the graph below.
3
300
The ratio of the rise to the run of two slope triangles formed by a line is equal to the slope of a line.
True or False
True
300
The table of values below shows the relationship between the number of mules and bales of hay a farmer needs to feed the mules on his farm. What equation represents the situation?
Y=1/2X
300
How can you tell if a dilated image is a reduction or an enlargement?
By looking at the scale factor. If it's larger than 1, it's an enlargement. If it's smaller than 1, it's a reduction.
300
Determine if the following relationship is a proportional or nonproportional situation.
nonproportional; the relationship among the variables is not constant.
400
Find the slope of the following equation:
y = –9x + 15
-9
400
Which of the following graphs demonstrates a non-proportional situation?
A. 
B. 
A, because it does not go through (0,0)
400
Which of the following graphs represents a proportional situation?
A. 
B. 
B, because it goes through (0,0)
400
Alice also sold candy bars like Isaiah to help raise money for her scouting troop. Is the amount of candy bars she sold proportional to the money she received? How do you know?
proportional; there is a relationship between the variables that is constant