Question

The equation of the regression line for the data in the table is ý = 4.9x - 198,where x represents the height and ŷ is the predicted walking speed.Student Height (in) Walking speed (m/min)Alice63108701457315968143641176613269144SantiagoIsaiahElliotAlexisLydiaScottWhat is the meaning of 4.9 in the equation?

Answer 1

B. For every 1-inch increase in height, walking speed increases by 4.9 m/min

Explanation:

We have the following expression:

`y=4.9x-198`

4.9 is the slope of the function, that is, it is the increase in y (walking speed) given by a unit in x (height).

This means that for every 1 inch that the walking speed increases, it increases by 4.9 units.

Therefore, the correct answer is B. For every 1-inch increase in height, walking speed increases by 4.9 m/min