What is y equal to negative X minus one on graph?

The equation y = -x - 1 represents a straight line on a graph. The slope of the line is -1, meaning that for every 1 unit increase in x, y will decrease by 1 unit. The y-intercept is -1, meaning that the line crosses the y-axis at the point (0, -1). The line will slope downwards from left to right.