L11 - Interactive 3: Practice Solving a System

[This activity is exercise to help you practice making a prediction.]

Page 1 of 1

Earlier in this lesson, you found the following trendline:

[Image of a linear trendline on a graph for shoe size.]

Use the trendline to predict the shoe size of a student who is 68 inches tall.

Predicted Shoe Size = _________

[Record your answer.]

Page 1 of 1 Answer

Solution:

To predict the shoe size of a student who is 68 inches tall, we enter 68 as the input of the trendline function:

y=0.6057x -31.555

y=0.6057(68) -31.555

y=41.1876 -31.555

y=9.6326

The student would need a shoe size of about 9.5 or 10.

[End of activity.]