+0  
 
0
88
2
avatar+110 

I need help in my practical math class.

https://prnt.sc/kzlz86

https://prnt.sc/kzlzh7

 

(Copy and paste links)

Thanks! 

Severoth  Sep 28, 2018
 #1
avatar+92800 
+2

First one....

 

(a)   The two points that should be used are ≈  (1,14)  and ≈  (7,7)....these don't lie directly on the line, but they are very close to the line

 

(b)  Slope =  [ 7 - 14 ] / [ 7 - 1 ] =   -7 / 6  ≈  - 1.166

 

(c)  Equation of the linear model  in point- slope form  is

 

(y - 7) = -1.166(x - 7)

 

(d)  Equation of the linear model in slope-intercept form :

 

y  = -1.166x + 8.162 + 7

 

y = -1.166x + 15.162 

 

 

 

cool cool cool

CPhill  Sep 29, 2018
 #2
avatar+92800 
+2

Second one

 

a)

 

Linear regression equation         Coefficient of determination  (r^2)

 

y = 2.16x + .391                         .903

 

Quadratic regression equation   Coefficient of determination

 

y = .096x^2 + .714x  + 3.803             .948

 

Exponential regression equation     Coefficient of determination

 

y = 4.63 (1.152)^x                               .951

 

 

b)  The exponetial regression equation fits the data best   [ highest r^2   and r value  ]

 

 

cool cool cool

CPhill  Sep 29, 2018

9 Online Users

avatar
avatar

New Privacy Policy

We use cookies to personalise content and advertisements and to analyse access to our website. Furthermore, our partners for online advertising receive information about your use of our website.
For more information: our cookie policy and privacy policy.