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

Front

What is a trend line in a scatter plot?

Back

A trend line is a straight line that best represents the data on a scatter plot, indicating the general direction of the data points.

Tags

CCSS.8.EE.B.5

Front

What does a positive association in a graph indicate?

Back

A positive association indicates that as one variable increases, the other variable also tends to increase.

Tags

CCSS.HSS.ID.B.5

Front

What is the difference between linear and non-linear relationships?

Back

Linear relationships can be represented by a straight line, while non-linear relationships cannot and may involve curves or other shapes.

Tags

CCSS.8.F.A.3

Front

How can you predict values using a trend line?

Back

You can predict values by extending the trend line and finding the corresponding value on the other axis.

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

Front

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

Back

The slope indicates the rate of change between the two variables; a steeper slope means a greater rate of change.

Tags

CCSS.8.EE.B.5

Front

What does it mean if a scatter plot shows no clear trend?

Back

It means there is no significant relationship between the two variables being plotted.

Tags

CCSS.HSS.ID.B.5

Front

How do you determine if a relationship is linear or non-linear from a graph?

Back

You can determine this by observing the shape of the data points; if they form a straight line, it's linear; if they curve or scatter, it's non-linear.

Tags

CCSS.8.F.A.3

Front

What is the formula for a linear equation?

Back

The formula for a linear equation is typically written as y = mx + b, where m is the slope and b is the y-intercept.

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

Front

What is the y-intercept in a linear equation?

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 estimate values from a scatter plot?

Back

You can estimate values by finding the corresponding x-value on the trend line and reading the y-value.