STAAR Review 9 - Trend Lines & Linear vs. Non Linear

Front

What is a positive association in a graph?

Back

A positive association in a graph indicates that as one variable increases, the other variable also increases.

Front

What is a negative association in a graph?

Back

A negative association in a graph indicates that as one variable increases, the other variable decreases.

Front

What does it mean if a graph is linear?

Back

A linear graph represents a constant rate of change, where the relationship between the variables can be expressed with a straight line.

Front

What does it mean if a graph is non-linear?

Back

A non-linear graph represents a variable rate of change, where the relationship between the variables cannot be expressed with a straight line.

Front

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

Back

The slope of a line is determined by the rise over run, which is the change in the y-values divided by the change in the x-values.

Front

What is the equation of a linear function?

Back

The equation of a linear function can be expressed in the form y = mx + b, where m is the slope and b is the y-intercept.

Front

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

Back

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

Front

How can you identify a linear relationship from a table of values?

Back

A linear relationship can be identified from a table of values if the differences between consecutive y-values divided by the differences between consecutive x-values are constant.

Front

What is the difference between independent and dependent variables?

Back

The independent variable is the variable that is manipulated or changed, while the dependent variable is the variable that is measured or affected.

Front

What is a scatter plot?

Back

A scatter plot is a graph that uses dots to represent the values obtained for two different variables, showing the relationship between them.