DA3 Review

Front

What is the best prediction of the resting heart rate of a person who exercises an average of 8 hours each week based on a scatterplot?

Back

50 beats per minute.

Front

Write an equation for the cost, C, after h hours of babysitting if Presley charges a flat fee of $3 and a rate of $5 per hour.

Back

C = $5h + $3.

Front

What does the rate of change represent in a graph showing place settings?

Back

The rate of change is the number of place settings per box, which is 4 place settings in each box.

Front

How far can Mrs. Jordan drive in 24 hours based on a given graph?

Back

153 miles.

Front

Write the equation of a graph that has a negative slope and a y-intercept of -3.

Back

Front

What is a scatterplot used for?

Back

A scatterplot is used to show the relationship between two quantitative variables.

Front

Define 'rate of change' in the context of a graph.

Back

Rate of change is the ratio of the change in the dependent variable to the change in the independent variable.

Front

What is the formula for calculating total cost when there is a flat fee and a variable rate?

Back

Total Cost = Flat Fee + (Rate per Hour * Number of Hours).

Front

How do you determine the slope of a line from a graph?

Back

The slope is determined by the rise over run, or the change in y divided by the change in x.

Front

What does a flat fee mean in a pricing model?

Back

A flat fee is a fixed charge that does not change regardless of the amount of service provided.