8.5D Trend Lines Assignment

Front

What is a linear function?

Back

A linear function is a function that graphs to a straight line. It can be represented by the equation y = mx + b, where m is the slope and b is the y-intercept.

Front

What is a nonlinear function?

Back

A nonlinear function is a function that does not graph to a straight line. Its graph can be a curve or any shape that is not straight.

Front

How can you determine if a graph is linear or nonlinear?

Back

You can determine if a graph is linear or nonlinear by checking if it forms a straight line. If it curves or has bends, it is nonlinear.

Front

What does a scatterplot show?

Back

A scatterplot shows the relationship between two variables by displaying data points on a Cartesian plane.

Front

What indicates a linear relationship in a scatterplot?

Back

A linear relationship in a scatterplot is indicated by data points that form a straight line or close to a straight line.

Front

What is a trend line?

Back

A trend line is a straight line that best represents the data on a scatterplot, showing the general direction of the data points.

Front

How do you estimate values using a trend line?

Back

To estimate values using a trend line, locate the desired x-value on the graph, then find the corresponding y-value on the trend line.

Front

What is the slope of a line?

Back

The slope of a line is a measure of its steepness, calculated as the change in y divided by the change in x (rise/run).

Front

What is the y-intercept?

Back

The y-intercept is the point where the line crosses the y-axis, representing the value of y when x is 0.

Front

What does it mean if a scatterplot has a positive correlation?

Back

A positive correlation in a scatterplot means that as one variable increases, the other variable also tends to increase.