Answer:
The desired equation is y = (-8/3)x + 3.
Explanation:
There's no one general form; several different forms apply here.
Seeing that the y-intercept is (0, 3) and that another point on the line is (3, -5), I'd use the slope-intercept form here: y = mx + b
As we move from the first point to the second, x increases by 3 and y decreases by 8. Thus, the slope of the line through the two points is
m = rise / run = -8/3. As before, the y-intercept is (0, 3), so b = 3.
The desired equation is y = (-8/3)x + 3.