Answer
Graph of given equation $y - x = -1$ is a straight line as sketched-
Work Step by Step
Given equation-
$y - x = -1$
To sketch graph of this equation, first we will find three points on it as following-
Substituting $x = 1$ in given equation-
$y - 1 = -1$
OR $ y = -1+1 = 0$
Hence a point $P (1, 0)$ lies on the line.
Now
Substituting $x = 0$ in given equation-
$y - 0 = -1$
OR $ y = -1$
Hence another point $Q (0, -1)$ also lies on the line.
Now
Substituting $x = 2$ in given equation-
$y - 2 = -1$
OR $ y = -1+2 = 1$
Hence another point $R (2, 1)$ also lies on the line.
Now we will mark the points $P, Q $ and $R$ on the graph paper and join these points to get the graph of given equation $y - x = -1$
