The equation y = x - 1 represents a linear function that describes a line with slope 1 and y-intercept at -1.
Linear equation: An equation that describes a straight line when graphed.
Slope-intercept form: The form of a linear equation given by y = mx + b, where m represents the slope and b represents the y-intercept.
Y-intercept: The point where a line crosses or intersects with the vertical y-axis on a coordinate plane.