Semester Exam Math Plus

Front

What is the y-intercept of a graph?

Back

The y-intercept is the point where the graph intersects the y-axis. It is represented as (0, b) where b is the value of the function when x = 0.

Front

How do you determine the slope of a line from a graph?

Back

The slope of a line is determined by the rise over run, which is the change in y divided by the change in x between two points on the line.

Front

What does a positive slope indicate about a line?

Back

A positive slope indicates that as the x-values increase, the y-values also increase, meaning the line rises from left to right.

Front

What is a scatter plot used for?

Back

A scatter plot is used to show the relationship between two variables. Each point represents an observation.

Front

How can you use a trend line in a scatter plot?

Back

A trend line can be used to predict values based on the observed relationship in the scatter plot.

Front

What does it mean to order numbers from least to greatest?

Back

Ordering numbers from least to greatest means arranging them in ascending order based on their value.

Front

How do you convert a percentage to a decimal?

Back

To convert a percentage to a decimal, divide the percentage by 100. For example, 141% becomes 1.41.

Front

Back

Front

What is the significance of the y-intercept in a linear equation?

Back

The y-intercept indicates the starting value of the dependent variable when the independent variable is zero.

Front

How do you find the y-intercept from a linear equation in slope-intercept form?

Back

In slope-intercept form, y = mx + b, the y-intercept is the value of b.