Interpret Slope of Scatter Plot

The linear regression equation for the data is  y = 1.5x + 12.  Interpret the slope of the equation.

• The slope is (0, 1.5).  It means that a pizza with 0 toppings will cost $1.50.

• The slope is 1.5.  It means that it costs $1.50 per topping.

• There are 1.5 toppings.

• There are 1.5 pizzas.

What type of association does this graph have?

• positive 

• negative

• none

• all of the above

As x increases, y decreases.

• no correlation

• negative correlation

• correlation coefficient

• positive correlation

Find the slope for the trend line using points (2,2) and (4,3)

• 2

• 1/2

• -2

the slope is -5/7, what does that mean?

• gain 5 hour of sleep for 7 cups of coffee

• lose 5 hours of sleep for 7 cups of coffee

• lose 7 cups of coffee for 5 hours of sleep

• lose 5 cups of coffee for 7 hours of sleep

A group of hikers is descending, and the elevation of several of the hikers after a certain number of minutes is shown in the scatter plot.

True or False:

The group of hikers descends about 250 feet every minute.

Hint: What's the unit rate, slope?

• True

• False

What does the slope represent in this situation?

• The sloth runs 1 feet in 3 minutes

• The sloth runs 3 feet in 1 minute

• The sloth runs fast

• The sloth runs 6 feet in 1 minute

What does the slope mean in the context of the situation graphed?

• You burn 500 calories every 60 minutes of exercise.

• You eat 500 calories when you eat out 60 times.

• You burn 100 calories every 10 minutes of exercise.

• You should not exercise.

What is the slope of the graph shown?
Use the points (0,0) and (60,500) to determine the slope.

Check both the original AND reduced answer.

Check the two ways you could write the slope for the graph shown.

Use (1995, 800) and (2001, 400) as two good points.

• -400/6

• 400/6

• -200/3

• 200/3