You need to rewrite the given equation into the standard form of y = mx +b, where m is the slope and b is the y-intercept.
x -y -3 =0
First add 3 to each side:
x-y = 3
Now subtract x from each side:
-y = 3-x
Rewrite the equation to get x in front of the 3:
-y = -x +3
Multiply both sides both the equation by -1:
y = x -3
Since x is by itself, the slope would be 1.
The y-intercept is -3
