Question 295209
john, some website rules
one problem at a time
no similar problems 
limit 4 problems a day

(b)	y = 13x + 14
        x = y - 1
plug in y-1 for x in the first equation to get
y=13*(y-1)+14
y=13y-13+14
y=13y+1
-12y=1
y=-1/12
x=y-1
x=-1/12-1
x=-13/12