The grade of a hill is its steepness represented as a percent. Jin tracks his walking speed up different hills. What does the ra
te of change, or slope, represent in this situation? A scatterplot with grade of hill as a percent on the x axis and walking speed in miles per hour on the y axis. About 20 points are plotted in a downward trend along with a line of best fit which begins at the point zero comma 3 point 5 and passes through the point 2 comma 3.
The rate represents an increase in speed for each 1% grade increase.
The rate represents a decrease in speed for each 1% grade decrease.
The rate represents a decrease in speed for each 1% grade increase.
The rate represents no change in speed for each 1% grade decrease.
Students use the least squares regression line to make predictions. ... Example 1 (2 minutes): Using a Line to Describe a Relationship ... the model given in the student lesson to predict a man's height using a shoe length of ... Below is a scatter plot of the data with two linear models, ... in Exercise 3 that represents this man
