I'm trying to develop a multiple line regression using a dummy variable. I have successfully created the dummy variable but I also need other variables to create a simple linear regression analysis. I have imported my data and I named that file "data2", this data contains 4 columns of variables: price.of.house, Region,schools.rating, and house.age

And for the simple linear regression analysis, I will need 2 variables for my X and Y. But I don't know how to name my variables because I want to use x <- price.of.house and y <- Region. The price.of.house and Region are my variables in the imported data2. Can you help me with the syntax to use these 2 variables in my code? Thank you so much!

This is my code:

#I need x = price.of.house and y=Region. How can I call these variables in the data2. I will need X, Y and Z for my linear regression analysis.

x_new <- read.table("data2") => I tried using this one but useless

#This part is for the dummy variables

region.list <- c(Region, data=data2)

region <- region.list[sample(c(1,2,3,4,5), 500, replace=TRUE)]

z <- vector(length = 500)

for (i in 1:500){

if (region[i] == "A|B") z [i] <- 0

else z[i] <- 1

}

result1 <- lm(y ~ x*z) => the linear regression line