Question

12/27/2020 apex learning - courses
7b )
a data set consists of the following data points:
(2,4),(4,7),(5,12)
the line of best fit has the equation ( y = 2.5x - 1.5 ). what does this equation predict for a value of ( x = 7 )?

choice

a. 16
b. 20.5
c. 17.5
d. 19
https://course.apexlearning.com/public/activity/7002003/assessment/preview
12/27/2020 apex learning - courses
7c )
a data set consists of the following data points:
(3,5),(5,8),(6,13)
the line of best fit has the equation ( y = 2.5x - 3 ). what does this equation predict for a value of ( x = 3 )?

choice

a. 7.5
b. 4.5
c. 9
d. 6

Explanation:

7b)

Step1: Sustituir \(x = 7\) en la ecuación \(y=2.5x - 1.5\)

$$y=2.5\times7-1.5$$

Step2: Calcular el valor de \(y\)

$$y = 17.5-1.5=16$$

Step1: Sustituir \(x = 3\) en la ecuación \(y = 2.5x-3\)

$$y=2.5\times3 - 3$$

Step2: Calcular el valor de \(y\)

$$y=7.5 - 3=4.5$$

Answer:

A. 16

7c)