Question 686763
y = mx+b


y = 7x+b


2 = 7(1)+b


2 = 7+b


2-7 = b


-5 = b


b = -5


y = mx+b


y = 7x - 5


y - 7x = -5


-7x + y = -5


7x - y = 5


So the answer is 7x - y = 5