Final answer:
The y-intercept in the equation y=5x-8 is -8, which is the point where the line crosses the y-axis when x is zero.
Step-by-step explanation:
In the linear equation y=5x-8, the y-intercept is represented by the constant term -8. This value tells you the point where the line crosses the y-axis. To find the y-intercept from a linear equation in slope-intercept form, you simply identify the constant or the b value.
So, for the equation y=5x-8, the y-intercept is -8. This indicates that when the independent variable x is zero, the value of y, or the dependent variable, is -8. This would be the starting point of the line on the graph.