Question 161023
 x - y = 4 

y = mx + b

The first step we need to do is isolate the y term
add-x to both sides

-y=-x+4

Divide all terms by -1

y=x-4 m = the coefficient of x=1

b=-4


Therefore the equation is y=x-4

*[invoke describe_linear_equation 1, -1, 4]