Question

the graph below shows the relationship between the height and weight of newborn babies. for every 1 inch increase in the babys height, what is the approximate weight increase in pounds? round your answer to the nearest tenth, if necessary.

Explanation:

Step1: Select two points on the line

Let's take two points on the trend - line of the scatter - plot. For example, (2, 6) and (6, 10).

Step2: Calculate the slope

The slope formula is $m=\frac{y_2 - y_1}{x_2 - x_1}$, where $(x_1,y_1)$ and $(x_2,y_2)$ are the two points. Here, $x$ represents weight and $y$ represents height. So $m=\frac{10 - 6}{6 - 2}=\frac{4}{4}=1$.

Answer:

1