Final answer:
The equation for the line in slope-intercept form is y = 3x + 9, indicating a slope of 3 and a y-intercept of 9.
Step-by-step explanation:
The equation for the line in slope-intercept form is y = 3x + 9. In this form, the coefficient of x represents the slope of the line and the constant term 9 represents the y-intercept, which is the point where the line intersects the y-axis. The slope of 3 indicates that for every increase of 1 unit in x, the corresponding increase in y is 3 units.