Q1 8th Grade Final Exam Review (Part 1)

Front

What is the y-intercept of a linear function?

Back

The y-intercept is the point where the line crosses the y-axis, represented as (0, b) in the equation of the line y = mx + b.

Front

How do you determine the y-intercept from the equation of a line?

Back

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

Front

What is a scatterplot?

Back

A scatterplot is a graph that shows the relationship between two quantitative variables by displaying data points on a two-dimensional plane.

Front

What does a trend line in a scatterplot represent?

Back

A trend line represents the general direction or pattern of the data points in a scatterplot, often used to make predictions.

Front

What is the formula for calculating total charges in a service scenario?

Back

The total charges can be calculated using the formula y = mx + b, where m is the rate per hour, x is the number of hours, and b is the fixed charge.

Front

How do you calculate the percentage of a subgroup in a data set?

Back

To calculate the percentage, divide the number of individuals in the subgroup by the total number of individuals, then multiply by 100.

Front

What is a two-way table?

Back

A two-way table is a statistical table that displays the frequency distribution of two categorical variables.

Front

What are categorical variables?

Back

Categorical variables are variables that represent categories or groups, such as gender or preference.

Front

What is the significance of the slope in a linear equation?

Back

The slope indicates the rate of change of the dependent variable with respect to the independent variable.

Front

How do you interpret the slope in a real-world context?

Back

In a real-world context, the slope represents how much the dependent variable changes for each unit increase in the independent variable.