which is the graph of x-y=1?

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Answer:
see attached
Step-by-step explanation:
You can find the intercepts by dividing the constant (1) by the coefficient of x (1) for the x-intercept, and the coefficient of y (-1) for the y-intercept.
Knowing the x-intercept is +1 and the y-intercept is -1 tells you the graphed line makes a triangle with the axes in the 4th quadrant. The attachment shows a graph of the equation.