Question

PLEASE HELP!!
The equation y = 6.3x + 67.4 is the equation of a linear model in a scatter plot comparing the ages of boys between 2 and 10 years old open parentheses x close parentheses and their average heights in centimeters open parentheses y close parentheses.



What is the average height of a 5-year-old boy?
Question 24 options:


98.9 cm


78.7 cm


67.4 cm


62.4 cm

Answer 1

Answer:

The average height of a 5-year-old boy is $98.9\ cm$

Step-by-step explanation:

Let

x------> the ages of boys between 2 and 10 years old

y-----> the average heights in centimeters

we have

$y=6.3x+67.4$

so

For $x=5$ year-old-boy

substitute in the equation the value of x to find the value of y

$y=6.3(5)+67.4=98.9\ cm$