Final answer:
The point-slope form of the equation is y - 3 = 3(x - 1).
Step-by-step explanation:
The point-slope form of an equation is given by y - y1 = m(x - x1), where (x1, y1) is a point on the line and m is the slope.
Given that the point (1,3) is on the line and the slope is 3, we can substitute these values into the point-slope form and simplify:
y - 3 = 3(x - 1)
The correct answer is A) y - 3 = 3(x - 1).