Question 29335
 for convience lets put numbering of the given equations...

x=4y...........equation no. 1 
y=3x+1.........equation no. 2

Now, by substitution method ,,,substitute the value of "x = 4y" from equation no. 1 to equation no 2 ....we get...

y = 3(4y) + 1 

y = 12y + 1 

y - 12y = 1

-11y = 1

y = 1/-11

or y = -1/11  

Now, put the vlaue of y= -1/11 in any of the equation ...but for easy calulation,,,,I choose equation no.1....

x = 4y

x = 4(-1/11)

x = -4/11

Therefore, the values are ,,,

 y = -1/11

 x = -4/11