Answer:
Step-by-step explanation:
You can obtain the regression equation using minitab software ...
First step:
Choose stat then select regression and regression
Next step:
In Response, enter the column containing the response (Y) variable as Cost.
Next step :
In Predictors, enter the columns containing the predictor (X) variables as Summated Rating.
Final step :Click OK.
Then you get your answer
We want to add something to the right side of the equation to get 81.
x^2 - 18x + 81 = 23
The final step is to factor and subtract 23. (Subtracting 23 is a unnecessary, but whatever)
(x - 9)^2 - 23 = 0
So "x" = 9 + sqrt23
Answer: The curve formed by a quadratic equation is called a PARABOLA
Step-by-step explanation: