Final answer:
The slope of the equation y = -1 + 3x is 3.
Step-by-step explanation:
The equation y = -1 + 3x is in slope-intercept form, y = mx + b, where m represents the slope. In this equation, the slope is 3. This means that for every 1 unit increase in x, the y-coordinate of a point on the line will increase by 3 units.
Learn more about slope in linear equations