Final answer:
In the equation y = 30x, the slope is 30 and the y-intercept is 0; the line goes upwards on the graph.
Step-by-step explanation:
The equation y = 30x is a linear equation where the slope of the line is 30, and the y-intercept is 0 (since there is no constant term added to 30x). The slope of 30 means for every increase of 1 on the horizontal axis (x-axis), there is a rise of 30 on the vertical axis (y-axis). Because the slope is positive, the line is going upwards on the graph as the x-value increases.