DA3 Review

Front

What is a unit rate?

Back

A unit rate is a ratio that compares a quantity to one unit of another quantity, often expressed as 'per' something, such as miles per hour or cost per item.

Front

How do you determine the unit rate from a graph?

Back

To determine the unit rate from a graph, identify the slope of the line, which represents the change in the dependent variable for each unit change in the independent variable.

Front

If Joe earned $400 and worked 25 hours, what is his hourly wage?

Back

His hourly wage is $16 per hour, calculated by dividing $400 by 25 hours.

Front

What does a nonlinear graph represent?

Back

A nonlinear graph represents a relationship between variables that does not form a straight line, indicating that the rate of change varies.

Front

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

Back

The slope of a linear graph indicates the rate of change between the two variables, showing how much one variable changes for a unit change in the other.

Front

How can you identify a linear relationship from a scatterplot?

Back

A linear relationship can be identified in a scatterplot if the points tend to cluster around a straight line.

Front

What does it mean if two graphs have the same unit rate?

Back

If two graphs have the same unit rate, it means they represent the same rate of change, even if their starting points or total values differ.

Front

What is the formula for calculating the cost per mile if the total cost is $30 for 15 miles?

Back

The cost per mile is calculated by dividing the total cost by the total miles: $30 ÷ 15 miles = $2 per mile.

Front

What is the difference between '5 feet per second' and '5 seconds per foot'?

Back

'5 feet per second' indicates speed, while '5 seconds per foot' indicates time taken to travel one foot.

Front

How do you interpret 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 the dependent variable when the independent variable is zero.