Proportional Relationship Review

Front

What is the definition of a proportional relationship?

Back

A proportional relationship is a relationship between two quantities where the ratio of one quantity to the other quantity is constant.

Front

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

Back

A positive slope indicates that as one variable increases, the other variable also increases.

Front

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

Back

A negative slope indicates that as one variable increases, the other variable decreases.

Front

What is the slope of a line?

Back

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

Front

What is the formula for calculating slope?

Back

Slope (m) = (y2 - y1) / (x2 - x1) where (x1, y1) and (x2, y2) are two points on the line.

Front

What does a slope of zero mean?

Back

A slope of zero means that the line is horizontal and there is no change in the y-value as the x-value changes.

Front

What does an undefined slope mean?

Back

An undefined slope means that the line is vertical, and there is no change in the x-value as the y-value changes.

Front

How do you identify the coordinates of a point on a graph?

Back

Coordinates are identified as (x, y), where 'x' is the horizontal position and 'y' is the vertical position.

Front

What is the x-axis?

Back

The x-axis is the horizontal line on a graph where the y-coordinate is zero.

Front

What is the y-axis?

Back

The y-axis is the vertical line on a graph where the x-coordinate is zero.