Which one of these is NOT a characteristic of a proportional graph?
options:
It passes through the origin (0, 0).
The y values are always larger than the x values.
It is a straight line.
y over x is the same for all points on the line.
The y values are always larger than the x values.
What can you determine from these data tables?
Sonia:
Number of problems:
6
18
25
60
Minutes of writing
120
360
500
1,200
Maryna
Number of problems:
8
15
20
50
options:
A) Sonia spent more time writing per problem at the unit rate of 20 min / 1 problem
B) Maryna spent less time writing per problem at the unit rate of 1 problem / 25 min
C)Sonia spent the same amount of time as Maryna at the unit rate of 25 min / 1 problem
D)Maryna spent more time writing per problem at the unit rate of 25 min / 1 problem
.
The correct option is D) Maryna spent more time writing per problem at the unit rate of 25 min / 1 problem. This can be determined by comparing the number of problems and the minutes of writing for each person. Maryna consistently had a smaller number of problems but a larger number of minutes of writing, indicating that she spent more time per problem.
Which two ratios form a proportion
4 over 20 and 2 fifths
4 over 20 and 1 fifth
20 fourths and 1 fifth
20 fourths and 2 fifths
The correct answer is:
4 over 20 and 1 fifth.
To form a proportion, the ratios must be equal. In this case, 4/20 is equivalent to 1/5 because both simplify to 1/5.