@Kitonum 

e.g something like that

> x = -2.937744839*a+3.004306849

> y = 0.14604232*a-11.89935178

@Kitonum 

I actually dont want values of x and y. I want their equations. But, its my mistake.. I didnt make it clear in my question. I want their equations, so that i can use it for random values. But thank you for taking the time to reply to my post! :)

@Markiyan Hirnyk 

Thankyou for replying! But i want to get two equations

I want to get equations of x and y from a.

e.g something like that

> x = -2.937744839*a+3.004306849

> y = 0.14604232*a-11.89935178