as people age, daily stress and worry decrease and happiness increases, according to an analysis of 340,847…

as people age, daily stress and worry decrease and happiness increases, according to an analysis of 340,847 adults ages 18 to 85 in a certain country. the graphs show a portion of the research. complete parts (a) and (b) below. a. find the slope of the line passing through the two points shown in the line graph. express the slope as a decimal. (round to one decimal place as needed.)

as people age, daily stress and worry decrease and happiness increases, according to an analysis of 340,847 adults ages 18 to 85 in a certain country. the graphs show a portion of the research. complete parts (a) and (b) below. a. find the slope of the line passing through the two points shown in the line graph. express the slope as a decimal. (round to one decimal place as needed.)

Answer

Explanation:

Step1: Recall slope formula

The slope formula between two points $(x_1,y_1)$ and $(x_2,y_2)$ is $m=\frac{y_2 - y_1}{x_2 - x_1}$. Here, $(x_1,y_1)=(22,46)$ and $(x_2,y_2)=(62,29)$.

Step2: Substitute values

$m=\frac{29 - 46}{62 - 22}=\frac{- 17}{40}$.

Step3: Calculate the value

$\frac{-17}{40}=- 0.425$.

Step4: Round the result

Rounding - 0.425 to one decimal place gives - 0.4.

Answer:

-0.4