8.SP.1-3 Review

Front

What is a scatter plot?

Back

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

Front

What does a linear relationship in a scatter plot indicate?

Back

A linear relationship indicates that as one variable increases or decreases, the other variable tends to increase or decrease in a consistent manner, forming a straight line when graphed.

Front

What is a line of best fit?

Back

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

Front

How can you determine if a scatter plot shows a linear relationship?

Back

You can determine if a scatter plot shows a linear relationship by observing if the data points cluster around a straight 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 the y-coordinate divided by the change in the x-coordinate (rise over run).

Front

What does a positive slope indicate?

Back

A positive slope indicates that as the x-value increases, the y-value also increases.

Front

What does a negative slope indicate?

Back

A negative slope indicates that as the x-value increases, the y-value decreases.

Front

How do you predict a value using a line of best fit?

Back

To predict a value using a line of best fit, locate the x-value on the graph, draw a vertical line to intersect the line of best fit, and then read the corresponding y-value.

Front

What is the equation of a line in slope-intercept form?

Back

Front

What is the y-intercept of a line?

Back

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