Algebra Keystone Review (Module 2)

Front

What is the domain of a relation?

Back

The domain of a relation is the set of all possible input values (x-values) for which the relation is defined.

Front

Given the relation {(2, 140), (5, 350), (14, 980)}, what is the domain?

Back

{2, 5, 14}

Front

How do you calculate the mean of a set of numbers?

Back

To calculate the mean, add all the numbers together and then divide by the total count of numbers.

Front

Omar rode 8, 2, 1, 7, 2, 6 miles on six days. How far must he ride on day seven to have a mean of 5 miles?

Back

9 miles

Front

What is a line graph used for?

Back

A line graph is used to display data points over time, showing trends and changes.

Front

If a line graph shows increasing visitors over months, what can be inferred about future visitors?

Back

It is likely that the number of visitors will continue to increase.

Front

What is a stem-and-leaf plot?

Back

A stem-and-leaf plot is a method of displaying quantitative data in a graphical format, similar to a histogram.

Front

How do you find the median of a data set?

Back

To find the median, arrange the numbers in order and identify the middle value.

Front

What is the median of the following data set: 100, 117, 121, 124?

Back

117

Front

What is a function in mathematics?

Back

A function is a relation that assigns exactly one output for each input.