I need help with completing this MCMC code in R$.$

Implement a Markov chain on R$^(2)$ defined by the equation:

Complete the provided code and generate a path plot starting at the origin $(0,0).$

## Complete the following R program by filling in lines labeled $-\_\_$FILL IN$\_\_$

## Each$\_\_$FILL IN$\_\_$should be only one line but you may add additional lines of code if you think it is necessary.