STAAR Review - 8

Front

What is the equation of a direct variation in the form of y = kx?

Back

The equation of a direct variation is in the form of y = kx, where k is a constant. For example, if k = 5, then the equation is y = 5x.

Front

How do you determine the slope from a graph?

Back

Front

What does a negative slope indicate about a line on a graph?

Back

A negative slope indicates that as x increases, y decreases, meaning the line goes down from left to right.

Front

What is a scatter plot?

Back

A scatter plot is a graph that shows the relationship between two variables by displaying data points on a Cartesian plane.

Front

What does it mean if there is no correlation in a scatter plot?

Back

If there is no correlation, it means that there is no apparent relationship between the two variables being plotted.

Front

What is a positive correlation?

Back

A positive correlation means that as one variable increases, the other variable also increases.

Front

What is a negative correlation?

Back

A negative correlation means that as one variable increases, the other variable decreases.

Front

How can you identify a linear equation from a graph?

Back

A linear equation can be identified from a graph if the points form a straight line.

Front

What is the y-intercept in a linear equation?

Back

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

Front

What is the formula for the slope-intercept form of a linear equation?

Back

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